diff --git a/Emby.Dlna/Didl/DidlBuilder.cs b/Emby.Dlna/Didl/DidlBuilder.cs
index 8e3a335c66..e2e3b2d8b6 100644
--- a/Emby.Dlna/Didl/DidlBuilder.cs
+++ b/Emby.Dlna/Didl/DidlBuilder.cs
@@ -191,7 +191,7 @@ namespace Emby.Dlna.Didl
 
         private void AddVideoResource(XmlWriter writer, BaseItem video, string deviceId, Filter filter, StreamInfo streamInfo = null)
         {
-            if (streamInfo == null)
+            if (streamInfo is null)
             {
                 var sources = _mediaSourceManager.GetStaticMediaSources(video, true, _user);
 
@@ -263,7 +263,7 @@ namespace Emby.Dlna.Didl
                 .FirstOrDefault(i => string.Equals(info.Format, i.Format, StringComparison.OrdinalIgnoreCase)
                                     && i.Method == SubtitleDeliveryMethod.External);
 
-            if (subtitleProfile == null)
+            if (subtitleProfile is null)
             {
                 return false;
             }
@@ -392,7 +392,7 @@ namespace Emby.Dlna.Didl
 
             var filename = url.Substring(0, url.IndexOf('?', StringComparison.Ordinal));
 
-            var mimeType = mediaProfile == null || string.IsNullOrEmpty(mediaProfile.MimeType)
+            var mimeType = mediaProfile is null || string.IsNullOrEmpty(mediaProfile.MimeType)
                ? MimeTypes.GetMimeType(filename)
                : mediaProfile.MimeType;
 
@@ -533,7 +533,7 @@ namespace Emby.Dlna.Didl
         {
             writer.WriteStartElement(string.Empty, "res", NsDidl);
 
-            if (streamInfo == null)
+            if (streamInfo is null)
             {
                 var sources = _mediaSourceManager.GetStaticMediaSources(audio, true, _user);
 
@@ -598,7 +598,7 @@ namespace Emby.Dlna.Didl
 
             var filename = url.Substring(0, url.IndexOf('?', StringComparison.Ordinal));
 
-            var mimeType = mediaProfile == null || string.IsNullOrEmpty(mediaProfile.MimeType)
+            var mimeType = mediaProfile is null || string.IsNullOrEmpty(mediaProfile.MimeType)
                 ? MimeTypes.GetMimeType(filename)
                 : mediaProfile.MimeType;
 
@@ -695,7 +695,7 @@ namespace Emby.Dlna.Didl
             }
 
             // Not a samsung device
-            if (secAttribute == null)
+            if (secAttribute is null)
             {
                 return;
             }
@@ -909,7 +909,7 @@ namespace Emby.Dlna.Didl
                     AddValue(writer, "dc", "creator", artist, NsDc);
 
                     // If it doesn't support album artists (musicvideo), then tag as both
-                    if (hasAlbumArtists == null)
+                    if (hasAlbumArtists is null)
                     {
                         AddAlbumArtist(writer, artist);
                     }
@@ -973,7 +973,7 @@ namespace Emby.Dlna.Didl
         {
             ImageDownloadInfo imageInfo = GetImageInfo(item);
 
-            if (imageInfo == null)
+            if (imageInfo is null)
             {
                 return;
             }
@@ -1036,7 +1036,7 @@ namespace Emby.Dlna.Didl
         {
             var imageInfo = GetImageInfo(item);
 
-            if (imageInfo == null)
+            if (imageInfo is null)
             {
                 return;
             }
@@ -1116,7 +1116,7 @@ namespace Emby.Dlna.Didl
 
         private BaseItem GetFirstParentWithImageBelowUserRoot(BaseItem item)
         {
-            if (item == null)
+            if (item is null)
             {
                 return null;
             }
diff --git a/Emby.Dlna/DlnaManager.cs b/Emby.Dlna/DlnaManager.cs
index 2ea2c130f2..31b999f64c 100644
--- a/Emby.Dlna/DlnaManager.cs
+++ b/Emby.Dlna/DlnaManager.cs
@@ -107,7 +107,7 @@ namespace Emby.Dlna
             var profile = GetProfiles()
                 .FirstOrDefault(i => i.Identification != null && IsMatch(deviceInfo, i.Identification));
 
-            if (profile == null)
+            if (profile is null)
             {
                 _logger.LogInformation("No matching device profile found. The default will need to be used. \n{@Profile}", deviceInfo);
             }
@@ -172,7 +172,7 @@ namespace Emby.Dlna
             ArgumentNullException.ThrowIfNull(headers);
 
             var profile = GetProfiles().FirstOrDefault(i => i.Identification != null && IsMatch(headers, i.Identification));
-            if (profile == null)
+            if (profile is null)
             {
                 _logger.LogDebug("No matching device profile found. {@Headers}", headers);
             }
@@ -272,7 +272,7 @@ namespace Emby.Dlna
 
             var info = GetProfileInfosInternal().FirstOrDefault(i => string.Equals(i.Info.Id, id, StringComparison.OrdinalIgnoreCase));
 
-            if (info == null)
+            if (info is null)
             {
                 return null;
             }
@@ -470,7 +470,7 @@ namespace Emby.Dlna
 
             var resource = GetType().Namespace + ".Images." + filename.ToLowerInvariant();
             var stream = _assembly.GetManifestResourceStream(resource);
-            if (stream == null)
+            if (stream is null)
             {
                 return null;
             }
diff --git a/Emby.Dlna/Main/DlnaEntryPoint.cs b/Emby.Dlna/Main/DlnaEntryPoint.cs
index 15021c19d6..bcd7ece085 100644
--- a/Emby.Dlna/Main/DlnaEntryPoint.cs
+++ b/Emby.Dlna/Main/DlnaEntryPoint.cs
@@ -199,7 +199,7 @@ namespace Emby.Dlna.Main
         {
             try
             {
-                if (_communicationsServer == null)
+                if (_communicationsServer is null)
                 {
                     var enableMultiSocketBinding = OperatingSystem.IsWindows() ||
                                                    OperatingSystem.IsLinux();
diff --git a/Emby.Dlna/PlayTo/Device.cs b/Emby.Dlna/PlayTo/Device.cs
index 34981bd3f4..1c7730187b 100644
--- a/Emby.Dlna/PlayTo/Device.cs
+++ b/Emby.Dlna/PlayTo/Device.cs
@@ -220,14 +220,14 @@ namespace Emby.Dlna.PlayTo
             var rendererCommands = await GetRenderingProtocolAsync(cancellationToken).ConfigureAwait(false);
 
             var command = rendererCommands?.ServiceActions.FirstOrDefault(c => c.Name == "SetMute");
-            if (command == null)
+            if (command is null)
             {
                 return false;
             }
 
             var service = GetServiceRenderingControl();
 
-            if (service == null)
+            if (service is null)
             {
                 return false;
             }
@@ -260,14 +260,14 @@ namespace Emby.Dlna.PlayTo
             var rendererCommands = await GetRenderingProtocolAsync(cancellationToken).ConfigureAwait(false);
 
             var command = rendererCommands?.ServiceActions.FirstOrDefault(c => c.Name == "SetVolume");
-            if (command == null)
+            if (command is null)
             {
                 return;
             }
 
             var service = GetServiceRenderingControl();
 
-            if (service == null)
+            if (service is null)
             {
                 throw new InvalidOperationException("Unable to find service");
             }
@@ -291,14 +291,14 @@ namespace Emby.Dlna.PlayTo
             var avCommands = await GetAVProtocolAsync(cancellationToken).ConfigureAwait(false);
 
             var command = avCommands?.ServiceActions.FirstOrDefault(c => c.Name == "Seek");
-            if (command == null)
+            if (command is null)
             {
                 return;
             }
 
             var service = GetAvTransportService();
 
-            if (service == null)
+            if (service is null)
             {
                 throw new InvalidOperationException("Unable to find service");
             }
@@ -324,7 +324,7 @@ namespace Emby.Dlna.PlayTo
             _logger.LogDebug("{0} - SetAvTransport Uri: {1} DlnaHeaders: {2}", Properties.Name, url, header);
 
             var command = avCommands?.ServiceActions.FirstOrDefault(c => c.Name == "SetAVTransportURI");
-            if (command == null)
+            if (command is null)
             {
                 return;
             }
@@ -337,7 +337,7 @@ namespace Emby.Dlna.PlayTo
 
             var service = GetAvTransportService();
 
-            if (service == null)
+            if (service is null)
             {
                 throw new InvalidOperationException("Unable to find service");
             }
@@ -381,7 +381,7 @@ namespace Emby.Dlna.PlayTo
             _logger.LogDebug("{PropertyName} - SetNextAvTransport Uri: {Url} DlnaHeaders: {Header}", Properties.Name, url, header);
 
             var command = avCommands.ServiceActions.FirstOrDefault(c => string.Equals(c.Name, "SetNextAVTransportURI", StringComparison.OrdinalIgnoreCase));
-            if (command == null)
+            if (command is null)
             {
                 return;
             }
@@ -394,7 +394,7 @@ namespace Emby.Dlna.PlayTo
 
             var service = GetAvTransportService();
 
-            if (service == null)
+            if (service is null)
             {
                 throw new InvalidOperationException("Unable to find service");
             }
@@ -418,13 +418,13 @@ namespace Emby.Dlna.PlayTo
         private Task SetPlay(TransportCommands avCommands, CancellationToken cancellationToken)
         {
             var command = avCommands.ServiceActions.FirstOrDefault(c => c.Name == "Play");
-            if (command == null)
+            if (command is null)
             {
                 return Task.CompletedTask;
             }
 
             var service = GetAvTransportService();
-            if (service == null)
+            if (service is null)
             {
                 throw new InvalidOperationException("Unable to find service");
             }
@@ -440,7 +440,7 @@ namespace Emby.Dlna.PlayTo
         public async Task SetPlay(CancellationToken cancellationToken)
         {
             var avCommands = await GetAVProtocolAsync(cancellationToken).ConfigureAwait(false);
-            if (avCommands == null)
+            if (avCommands is null)
             {
                 return;
             }
@@ -455,7 +455,7 @@ namespace Emby.Dlna.PlayTo
             var avCommands = await GetAVProtocolAsync(cancellationToken).ConfigureAwait(false);
 
             var command = avCommands?.ServiceActions.FirstOrDefault(c => c.Name == "Stop");
-            if (command == null)
+            if (command is null)
             {
                 return;
             }
@@ -479,7 +479,7 @@ namespace Emby.Dlna.PlayTo
             var avCommands = await GetAVProtocolAsync(cancellationToken).ConfigureAwait(false);
 
             var command = avCommands?.ServiceActions.FirstOrDefault(c => c.Name == "Pause");
-            if (command == null)
+            if (command is null)
             {
                 return;
             }
@@ -513,7 +513,7 @@ namespace Emby.Dlna.PlayTo
 
                 var avCommands = await GetAVProtocolAsync(cancellationToken).ConfigureAwait(false);
 
-                if (avCommands == null)
+                if (avCommands is null)
                 {
                     return;
                 }
@@ -538,7 +538,7 @@ namespace Emby.Dlna.PlayTo
 
                         var currentObject = tuple.Track;
 
-                        if (tuple.Success && currentObject == null)
+                        if (tuple.Success && currentObject is null)
                         {
                             currentObject = await GetMediaInfo(avCommands, cancellationToken).ConfigureAwait(false);
                         }
@@ -607,14 +607,14 @@ namespace Emby.Dlna.PlayTo
             var rendererCommands = await GetRenderingProtocolAsync(cancellationToken).ConfigureAwait(false);
 
             var command = rendererCommands?.ServiceActions.FirstOrDefault(c => c.Name == "GetVolume");
-            if (command == null)
+            if (command is null)
             {
                 return;
             }
 
             var service = GetServiceRenderingControl();
 
-            if (service == null)
+            if (service is null)
             {
                 return;
             }
@@ -626,7 +626,7 @@ namespace Emby.Dlna.PlayTo
                 rendererCommands.BuildPost(command, service.ServiceType),
                 cancellationToken: cancellationToken).ConfigureAwait(false);
 
-            if (result == null || result.Document == null)
+            if (result is null || result.Document is null)
             {
                 return;
             }
@@ -657,14 +657,14 @@ namespace Emby.Dlna.PlayTo
             var rendererCommands = await GetRenderingProtocolAsync(cancellationToken).ConfigureAwait(false);
 
             var command = rendererCommands?.ServiceActions.FirstOrDefault(c => c.Name == "GetMute");
-            if (command == null)
+            if (command is null)
             {
                 return;
             }
 
             var service = GetServiceRenderingControl();
 
-            if (service == null)
+            if (service is null)
             {
                 return;
             }
@@ -676,7 +676,7 @@ namespace Emby.Dlna.PlayTo
                 rendererCommands.BuildPost(command, service.ServiceType),
                 cancellationToken: cancellationToken).ConfigureAwait(false);
 
-            if (result == null || result.Document == null)
+            if (result is null || result.Document is null)
             {
                 return;
             }
@@ -691,13 +691,13 @@ namespace Emby.Dlna.PlayTo
         private async Task<TransportState?> GetTransportInfo(TransportCommands avCommands, CancellationToken cancellationToken)
         {
             var command = avCommands.ServiceActions.FirstOrDefault(c => c.Name == "GetTransportInfo");
-            if (command == null)
+            if (command is null)
             {
                 return null;
             }
 
             var service = GetAvTransportService();
-            if (service == null)
+            if (service is null)
             {
                 return null;
             }
@@ -709,7 +709,7 @@ namespace Emby.Dlna.PlayTo
                 avCommands.BuildPost(command, service.ServiceType),
                 cancellationToken: cancellationToken).ConfigureAwait(false);
 
-            if (result == null || result.Document == null)
+            if (result is null || result.Document is null)
             {
                 return null;
             }
@@ -731,19 +731,19 @@ namespace Emby.Dlna.PlayTo
         private async Task<UBaseObject> GetMediaInfo(TransportCommands avCommands, CancellationToken cancellationToken)
         {
             var command = avCommands.ServiceActions.FirstOrDefault(c => c.Name == "GetMediaInfo");
-            if (command == null)
+            if (command is null)
             {
                 return null;
             }
 
             var service = GetAvTransportService();
-            if (service == null)
+            if (service is null)
             {
                 throw new InvalidOperationException("Unable to find service");
             }
 
             var rendererCommands = await GetRenderingProtocolAsync(cancellationToken).ConfigureAwait(false);
-            if (rendererCommands == null)
+            if (rendererCommands is null)
             {
                 return null;
             }
@@ -755,14 +755,14 @@ namespace Emby.Dlna.PlayTo
                 rendererCommands.BuildPost(command, service.ServiceType),
                 cancellationToken: cancellationToken).ConfigureAwait(false);
 
-            if (result == null || result.Document == null)
+            if (result is null || result.Document is null)
             {
                 return null;
             }
 
             var track = result.Document.Descendants("CurrentURIMetaData").FirstOrDefault();
 
-            if (track == null)
+            if (track is null)
             {
                 return null;
             }
@@ -778,7 +778,7 @@ namespace Emby.Dlna.PlayTo
 
             track = result.Document.Descendants("CurrentURI").FirstOrDefault();
 
-            if (track == null)
+            if (track is null)
             {
                 return null;
             }
@@ -801,21 +801,21 @@ namespace Emby.Dlna.PlayTo
         private async Task<(bool Success, UBaseObject Track)> GetPositionInfo(TransportCommands avCommands, CancellationToken cancellationToken)
         {
             var command = avCommands.ServiceActions.FirstOrDefault(c => c.Name == "GetPositionInfo");
-            if (command == null)
+            if (command is null)
             {
                 return (false, null);
             }
 
             var service = GetAvTransportService();
 
-            if (service == null)
+            if (service is null)
             {
                 throw new InvalidOperationException("Unable to find service");
             }
 
             var rendererCommands = await GetRenderingProtocolAsync(cancellationToken).ConfigureAwait(false);
 
-            if (rendererCommands == null)
+            if (rendererCommands is null)
             {
                 return (false, null);
             }
@@ -827,7 +827,7 @@ namespace Emby.Dlna.PlayTo
                 rendererCommands.BuildPost(command, service.ServiceType),
                 cancellationToken: cancellationToken).ConfigureAwait(false);
 
-            if (result == null || result.Document == null)
+            if (result is null || result.Document is null)
             {
                 return (false, null);
             }
@@ -858,7 +858,7 @@ namespace Emby.Dlna.PlayTo
 
             var track = result.Document.Descendants("TrackMetaData").FirstOrDefault();
 
-            if (track == null)
+            if (track is null)
             {
                 // If track is null, some vendors do this, use GetMediaInfo instead.
                 return (true, null);
@@ -882,7 +882,7 @@ namespace Emby.Dlna.PlayTo
                 _logger.LogError(ex, "Uncaught exception while parsing xml");
             }
 
-            if (uPnpResponse == null)
+            if (uPnpResponse is null)
             {
                 _logger.LogError("Failed to parse xml: \n {Xml}", trackString);
                 return (true, null);
@@ -985,7 +985,7 @@ namespace Emby.Dlna.PlayTo
             }
 
             var avService = GetAvTransportService();
-            if (avService == null)
+            if (avService is null)
             {
                 return null;
             }
@@ -995,7 +995,7 @@ namespace Emby.Dlna.PlayTo
             var httpClient = new DlnaHttpClient(_logger, _httpClientFactory);
 
             var document = await httpClient.GetDataAsync(url, cancellationToken).ConfigureAwait(false);
-            if (document == null)
+            if (document is null)
             {
                 return null;
             }
@@ -1017,7 +1017,7 @@ namespace Emby.Dlna.PlayTo
             }
 
             var avService = GetServiceRenderingControl();
-            if (avService == null)
+            if (avService is null)
             {
                 throw new ArgumentException("Device AvService is null");
             }
@@ -1027,7 +1027,7 @@ namespace Emby.Dlna.PlayTo
             var httpClient = new DlnaHttpClient(_logger, _httpClientFactory);
             _logger.LogDebug("Dlna Device.GetRenderingProtocolAsync");
             var document = await httpClient.GetDataAsync(url, cancellationToken).ConfigureAwait(false);
-            if (document == null)
+            if (document is null)
             {
                 return null;
             }
@@ -1062,7 +1062,7 @@ namespace Emby.Dlna.PlayTo
             var ssdpHttpClient = new DlnaHttpClient(logger, httpClientFactory);
 
             var document = await ssdpHttpClient.GetDataAsync(url.ToString(), cancellationToken).ConfigureAwait(false);
-            if (document == null)
+            if (document is null)
             {
                 return null;
             }
@@ -1149,13 +1149,13 @@ namespace Emby.Dlna.PlayTo
 
             foreach (var services in document.Descendants(UPnpNamespaces.Ud.GetName("serviceList")))
             {
-                if (services == null)
+                if (services is null)
                 {
                     continue;
                 }
 
                 var servicesList = services.Descendants(UPnpNamespaces.Ud.GetName("service"));
-                if (servicesList == null)
+                if (servicesList is null)
                 {
                     continue;
                 }
@@ -1212,14 +1212,14 @@ namespace Emby.Dlna.PlayTo
             var previousMediaInfo = CurrentMediaInfo;
             CurrentMediaInfo = mediaInfo;
 
-            if (mediaInfo == null)
+            if (mediaInfo is null)
             {
                 if (previousMediaInfo != null)
                 {
                     OnPlaybackStop(previousMediaInfo);
                 }
             }
-            else if (previousMediaInfo == null)
+            else if (previousMediaInfo is null)
             {
                 if (state != TransportState.STOPPED)
                 {
diff --git a/Emby.Dlna/PlayTo/PlayToController.cs b/Emby.Dlna/PlayTo/PlayToController.cs
index 65367e24f2..fca5fc2a0d 100644
--- a/Emby.Dlna/PlayTo/PlayToController.cs
+++ b/Emby.Dlna/PlayTo/PlayToController.cs
@@ -164,7 +164,7 @@ namespace Emby.Dlna.PlayTo
                 }
 
                 streamInfo = StreamParams.ParseFromUrl(e.NewMediaInfo.Url, _libraryManager, _mediaSourceManager);
-                if (streamInfo.Item == null)
+                if (streamInfo.Item is null)
                 {
                     return;
                 }
@@ -199,7 +199,7 @@ namespace Emby.Dlna.PlayTo
             {
                 var streamInfo = StreamParams.ParseFromUrl(e.MediaInfo.Url, _libraryManager, _mediaSourceManager);
 
-                if (streamInfo.Item == null)
+                if (streamInfo.Item is null)
                 {
                     return;
                 }
@@ -210,7 +210,7 @@ namespace Emby.Dlna.PlayTo
 
                 var mediaSource = await streamInfo.GetMediaSource(CancellationToken.None).ConfigureAwait(false);
 
-                var duration = mediaSource == null
+                var duration = mediaSource is null
                     ? _device.Duration?.Ticks
                     : mediaSource.RunTimeTicks;
 
@@ -865,7 +865,7 @@ namespace Emby.Dlna.PlayTo
                 throw new ObjectDisposedException(GetType().Name);
             }
 
-            if (_device == null)
+            if (_device is null)
             {
                 return Task.CompletedTask;
             }
diff --git a/Emby.Dlna/PlayTo/PlayToManager.cs b/Emby.Dlna/PlayTo/PlayToManager.cs
index 294bda5b6a..f4a9a90af4 100644
--- a/Emby.Dlna/PlayTo/PlayToManager.cs
+++ b/Emby.Dlna/PlayTo/PlayToManager.cs
@@ -176,10 +176,10 @@ namespace Emby.Dlna.PlayTo
 
             var controller = sessionInfo.SessionControllers.OfType<PlayToController>().FirstOrDefault();
 
-            if (controller == null)
+            if (controller is null)
             {
                 var device = await Device.CreateuPnpDeviceAsync(uri, _httpClientFactory, _logger, cancellationToken).ConfigureAwait(false);
-                if (device == null)
+                if (device is null)
                 {
                     _logger.LogError("Ignoring device as xml response is invalid.");
                     return;
diff --git a/Emby.Dlna/Ssdp/DeviceDiscovery.cs b/Emby.Dlna/Ssdp/DeviceDiscovery.cs
index 391dda1479..bb58a5d1b6 100644
--- a/Emby.Dlna/Ssdp/DeviceDiscovery.cs
+++ b/Emby.Dlna/Ssdp/DeviceDiscovery.cs
@@ -71,7 +71,7 @@ namespace Emby.Dlna.Ssdp
         {
             lock (_syncLock)
             {
-                if (_listenerCount > 0 && _deviceLocator == null && _commsServer != null)
+                if (_listenerCount > 0 && _deviceLocator is null && _commsServer != null)
                 {
                     _deviceLocator = new SsdpDeviceLocator(_commsServer);
 
@@ -97,7 +97,7 @@ namespace Emby.Dlna.Ssdp
         {
             var originalHeaders = e.DiscoveredDevice.ResponseHeaders;
 
-            var headerDict = originalHeaders == null ? new Dictionary<string, KeyValuePair<string, IEnumerable<string>>>() : originalHeaders.ToDictionary(i => i.Key, StringComparer.OrdinalIgnoreCase);
+            var headerDict = originalHeaders is null ? new Dictionary<string, KeyValuePair<string, IEnumerable<string>>>() : originalHeaders.ToDictionary(i => i.Key, StringComparer.OrdinalIgnoreCase);
 
             var headers = headerDict.ToDictionary(i => i.Key, i => i.Value.Value.FirstOrDefault(), StringComparer.OrdinalIgnoreCase);
 
@@ -116,7 +116,7 @@ namespace Emby.Dlna.Ssdp
         {
             var originalHeaders = e.DiscoveredDevice.ResponseHeaders;
 
-            var headerDict = originalHeaders == null ? new Dictionary<string, KeyValuePair<string, IEnumerable<string>>>() : originalHeaders.ToDictionary(i => i.Key, StringComparer.OrdinalIgnoreCase);
+            var headerDict = originalHeaders is null ? new Dictionary<string, KeyValuePair<string, IEnumerable<string>>>() : originalHeaders.ToDictionary(i => i.Key, StringComparer.OrdinalIgnoreCase);
 
             var headers = headerDict.ToDictionary(i => i.Key, i => i.Value.Value.FirstOrDefault(), StringComparer.OrdinalIgnoreCase);
 
diff --git a/Emby.Drawing/ImageProcessor.cs b/Emby.Drawing/ImageProcessor.cs
index 11256dafde..d2c430415a 100644
--- a/Emby.Drawing/ImageProcessor.cs
+++ b/Emby.Drawing/ImageProcessor.cs
@@ -436,7 +436,7 @@ namespace Emby.Drawing
         /// <inheritdoc />
         public string? GetImageCacheTag(User user)
         {
-            if (user.ProfileImage == null)
+            if (user.ProfileImage is null)
             {
                 return null;
             }
diff --git a/Emby.Naming/AudioBook/AudioBookListResolver.cs b/Emby.Naming/AudioBook/AudioBookListResolver.cs
index 6e491185d8..7a241aab2b 100644
--- a/Emby.Naming/AudioBook/AudioBookListResolver.cs
+++ b/Emby.Naming/AudioBook/AudioBookListResolver.cs
@@ -75,7 +75,7 @@ namespace Emby.Naming.AudioBook
 
             foreach (var group in groupedBy)
             {
-                if (group.Key.ChapterNumber == null && group.Key.PartNumber == null)
+                if (group.Key.ChapterNumber is null && group.Key.PartNumber is null)
                 {
                     if (group.Count() > 1 || haveChaptersOrPages)
                     {
diff --git a/Emby.Naming/AudioBook/AudioBookNameParser.cs b/Emby.Naming/AudioBook/AudioBookNameParser.cs
index 120482bc2c..97b34199e0 100644
--- a/Emby.Naming/AudioBook/AudioBookNameParser.cs
+++ b/Emby.Naming/AudioBook/AudioBookNameParser.cs
@@ -33,7 +33,7 @@ namespace Emby.Naming.AudioBook
                 var match = new Regex(expression, RegexOptions.IgnoreCase).Match(name);
                 if (match.Success)
                 {
-                    if (result.Name == null)
+                    if (result.Name is null)
                     {
                         var value = match.Groups["name"];
                         if (value.Success)
diff --git a/Emby.Naming/ExternalFiles/ExternalPathParser.cs b/Emby.Naming/ExternalFiles/ExternalPathParser.cs
index 1fa4fa5371..cfe3256e3d 100644
--- a/Emby.Naming/ExternalFiles/ExternalPathParser.cs
+++ b/Emby.Naming/ExternalFiles/ExternalPathParser.cs
@@ -94,7 +94,7 @@ namespace Emby.Naming.ExternalFiles
                     // Try to translate to three character code
                     var culture = _localizationManager.FindLanguageInfo(currentSliceWithoutSeparator);
 
-                    if (culture != null && pathInfo.Language == null)
+                    if (culture != null && pathInfo.Language is null)
                     {
                         pathInfo.Language = culture.ThreeLetterISOLanguageName;
                         extraString = extraString.Replace(currentSlice, string.Empty, StringComparison.OrdinalIgnoreCase);
diff --git a/Emby.Naming/Video/VideoListResolver.cs b/Emby.Naming/Video/VideoListResolver.cs
index 11f82525f3..1366bdb2c3 100644
--- a/Emby.Naming/Video/VideoListResolver.cs
+++ b/Emby.Naming/Video/VideoListResolver.cs
@@ -26,7 +26,7 @@ namespace Emby.Naming.Video
             // Filter out all extras, otherwise they could cause stacks to not be resolved
             // See the unit test TestStackedWithTrailer
             var nonExtras = videoInfos
-                .Where(i => i.ExtraType == null)
+                .Where(i => i.ExtraType is null)
                 .Select(i => new FileSystemMetadata { FullName = i.Path, IsDirectory = i.IsDirectory });
 
             var stackResult = StackResolver.Resolve(nonExtras, namingOptions).ToList();
@@ -42,7 +42,7 @@ namespace Emby.Naming.Video
                     continue;
                 }
 
-                if (current.ExtraType == null)
+                if (current.ExtraType is null)
                 {
                     standaloneMedia.Add(current);
                 }
diff --git a/Emby.Naming/Video/VideoResolver.cs b/Emby.Naming/Video/VideoResolver.cs
index de8e177d8b..858e9dd2f5 100644
--- a/Emby.Naming/Video/VideoResolver.cs
+++ b/Emby.Naming/Video/VideoResolver.cs
@@ -87,7 +87,7 @@ namespace Emby.Naming.Video
                 name = cleanDateTimeResult.Name;
                 year = cleanDateTimeResult.Year;
 
-                if (extraResult.ExtraType == null
+                if (extraResult.ExtraType is null
                     && TryCleanString(name, namingOptions, out var newName))
                 {
                     name = newName;
diff --git a/Emby.Notifications/NotificationEntryPoint.cs b/Emby.Notifications/NotificationEntryPoint.cs
index 668c059b47..3763b1e922 100644
--- a/Emby.Notifications/NotificationEntryPoint.cs
+++ b/Emby.Notifications/NotificationEntryPoint.cs
@@ -141,7 +141,7 @@ namespace Emby.Notifications
 
             lock (_libraryChangedSyncLock)
             {
-                if (_libraryUpdateTimer == null)
+                if (_libraryUpdateTimer is null)
                 {
                     _libraryUpdateTimer = new Timer(
                         LibraryUpdateTimerCallback,
diff --git a/Emby.Notifications/NotificationManager.cs b/Emby.Notifications/NotificationManager.cs
index ac90cc8ec5..2b9d2c5774 100644
--- a/Emby.Notifications/NotificationManager.cs
+++ b/Emby.Notifications/NotificationManager.cs
@@ -68,7 +68,7 @@ namespace Emby.Notifications
 
             var users = GetUserIds(request, options)
                 .Select(i => _userManager.GetUserById(i))
-                .Where(i => relatedItem == null || relatedItem.IsVisibleStandalone(i))
+                .Where(i => relatedItem is null || relatedItem.IsVisibleStandalone(i))
                 .ToArray();
 
             var title = request.Name;
diff --git a/Emby.Server.Implementations/AppBase/BaseConfigurationManager.cs b/Emby.Server.Implementations/AppBase/BaseConfigurationManager.cs
index 26b4649dd8..5876c9b4c6 100644
--- a/Emby.Server.Implementations/AppBase/BaseConfigurationManager.cs
+++ b/Emby.Server.Implementations/AppBase/BaseConfigurationManager.cs
@@ -144,7 +144,7 @@ namespace Emby.Server.Implementations.AppBase
         {
             IConfigurationFactory factory = Activator.CreateInstance<T>();
 
-            if (_configurationFactories == null)
+            if (_configurationFactories is null)
             {
                 _configurationFactories = new[] { factory };
             }
@@ -306,7 +306,7 @@ namespace Emby.Server.Implementations.AppBase
                         configurationManager._configurationStores,
                         i => string.Equals(i.Key, k, StringComparison.OrdinalIgnoreCase));
 
-                    if (configurationInfo == null)
+                    if (configurationInfo is null)
                     {
                         throw new ResourceNotFoundException("Configuration with key " + k + " not found.");
                     }
diff --git a/Emby.Server.Implementations/AppBase/ConfigurationHelper.cs b/Emby.Server.Implementations/AppBase/ConfigurationHelper.cs
index f923e59efb..1c84776059 100644
--- a/Emby.Server.Implementations/AppBase/ConfigurationHelper.cs
+++ b/Emby.Server.Implementations/AppBase/ConfigurationHelper.cs
@@ -43,7 +43,7 @@ namespace Emby.Server.Implementations.AppBase
             Span<byte> newBytes = stream.GetBuffer().AsSpan(0, (int)stream.Length);
 
             // If the file didn't exist before, or if something has changed, re-save
-            if (buffer == null || !newBytes.SequenceEqual(buffer))
+            if (buffer is null || !newBytes.SequenceEqual(buffer))
             {
                 var directory = Path.GetDirectoryName(path) ?? throw new ArgumentException($"Provided path ({path}) is not valid.", nameof(path));
 
diff --git a/Emby.Server.Implementations/Channels/ChannelManager.cs b/Emby.Server.Implementations/Channels/ChannelManager.cs
index 6837cce5cc..d7eb7e3aca 100644
--- a/Emby.Server.Implementations/Channels/ChannelManager.cs
+++ b/Emby.Server.Implementations/Channels/ChannelManager.cs
@@ -129,7 +129,7 @@ namespace Emby.Server.Implementations.Channels
         public Task DeleteItem(BaseItem item)
         {
             var internalChannel = _libraryManager.GetItemById(item.ChannelId);
-            if (internalChannel == null)
+            if (internalChannel is null)
             {
                 throw new ArgumentException(nameof(item.ChannelId));
             }
@@ -253,7 +253,7 @@ namespace Emby.Server.Implementations.Channels
             if (query.StartIndex.HasValue || query.Limit.HasValue)
             {
                 int startIndex = query.StartIndex ?? 0;
-                int count = query.Limit == null ? totalCount - startIndex : Math.Min(query.Limit.Value, totalCount - startIndex);
+                int count = query.Limit is null ? totalCount - startIndex : Math.Min(query.Limit.Value, totalCount - startIndex);
                 all = all.GetRange(startIndex, count);
             }
 
@@ -355,7 +355,7 @@ namespace Emby.Server.Implementations.Channels
         {
             var path = Path.Combine(item.GetInternalMetadataPath(), "channelmediasourceinfos.json");
 
-            if (mediaSources == null || mediaSources.Count == 0)
+            if (mediaSources is null || mediaSources.Count == 0)
             {
                 try
                 {
@@ -447,7 +447,7 @@ namespace Emby.Server.Implementations.Channels
 
             var item = _libraryManager.GetItemById(id) as Channel;
 
-            if (item == null)
+            if (item is null)
             {
                 item = new Channel
                 {
@@ -861,7 +861,7 @@ namespace Emby.Server.Implementations.Channels
 
                 var result = await channel.GetChannelItems(query, cancellationToken).ConfigureAwait(false);
 
-                if (result == null)
+                if (result is null)
                 {
                     throw new InvalidOperationException("Channel returned a null result from GetChannelItems");
                 }
@@ -955,7 +955,7 @@ namespace Emby.Server.Implementations.Channels
                 _logger.LogError(ex, "Error retrieving channel item from database");
             }
 
-            if (item == null)
+            if (item is null)
             {
                 item = new T();
                 isNew = true;
@@ -1193,7 +1193,7 @@ namespace Emby.Server.Implementations.Channels
             var result = GetAllChannels()
                 .FirstOrDefault(i => GetInternalChannelId(i.Name).Equals(channel.ChannelId) || string.Equals(i.Name, channel.Name, StringComparison.OrdinalIgnoreCase));
 
-            if (result == null)
+            if (result is null)
             {
                 throw new ResourceNotFoundException("No channel provider found for channel " + channel.Name);
             }
@@ -1206,7 +1206,7 @@ namespace Emby.Server.Implementations.Channels
             var result = GetAllChannels()
                 .FirstOrDefault(i => internalChannelId.Equals(GetInternalChannelId(i.Name)));
 
-            if (result == null)
+            if (result is null)
             {
                 throw new ResourceNotFoundException("No channel provider found for channel id " + internalChannelId);
             }
diff --git a/Emby.Server.Implementations/Collections/CollectionManager.cs b/Emby.Server.Implementations/Collections/CollectionManager.cs
index 187e0c9b3b..701c7b61dc 100644
--- a/Emby.Server.Implementations/Collections/CollectionManager.cs
+++ b/Emby.Server.Implementations/Collections/CollectionManager.cs
@@ -121,7 +121,7 @@ namespace Emby.Server.Implementations.Collections
         {
             var folder = GetCollectionsFolder(false).GetAwaiter().GetResult();
 
-            return folder == null
+            return folder is null
                 ? Enumerable.Empty<BoxSet>()
                 : folder.GetChildren(user, true).OfType<BoxSet>();
         }
@@ -138,7 +138,7 @@ namespace Emby.Server.Implementations.Collections
 
             var parentFolder = await GetCollectionsFolder(true).ConfigureAwait(false);
 
-            if (parentFolder == null)
+            if (parentFolder is null)
             {
                 throw new ArgumentException(nameof(parentFolder));
             }
@@ -216,7 +216,7 @@ namespace Emby.Server.Implementations.Collections
             {
                 var item = _libraryManager.GetItemById(id);
 
-                if (item == null)
+                if (item is null)
                 {
                     throw new ArgumentException("No item exists with the supplied Id");
                 }
@@ -267,7 +267,7 @@ namespace Emby.Server.Implementations.Collections
 
                 var child = collection.LinkedChildren.FirstOrDefault(i => (i.ItemId.HasValue && i.ItemId.Value.Equals(guidId)) || (childItem != null && string.Equals(childItem.Path, i.Path, StringComparison.OrdinalIgnoreCase)));
 
-                if (child == null)
+                if (child is null)
                 {
                     _logger.LogWarning("No collection title exists with the supplied Id");
                     continue;
diff --git a/Emby.Server.Implementations/Data/SqliteExtensions.cs b/Emby.Server.Implementations/Data/SqliteExtensions.cs
index 736b8125d7..4055b0ba17 100644
--- a/Emby.Server.Implementations/Data/SqliteExtensions.cs
+++ b/Emby.Server.Implementations/Data/SqliteExtensions.cs
@@ -253,7 +253,7 @@ namespace Emby.Server.Implementations.Data
         {
             if (statement.BindParameters.TryGetValue(name, out IBindParameter bindParam))
             {
-                if (value == null)
+                if (value is null)
                 {
                     bindParam.BindNull();
                 }
diff --git a/Emby.Server.Implementations/Data/SqliteItemRepository.cs b/Emby.Server.Implementations/Data/SqliteItemRepository.cs
index 9d44fd9d18..36fdfc8f27 100644
--- a/Emby.Server.Implementations/Data/SqliteItemRepository.cs
+++ b/Emby.Server.Implementations/Data/SqliteItemRepository.cs
@@ -691,7 +691,7 @@ namespace Emby.Server.Implementations.Data
 
         private string GetPathToSave(string path)
         {
-            if (path == null)
+            if (path is null)
             {
                 return null;
             }
@@ -890,7 +890,7 @@ namespace Emby.Server.Implementations.Data
 
             saveItemStatement.TryBind("@UnratedType", item.GetBlockUnratedType().ToString());
 
-            if (topParent == null)
+            if (topParent is null)
             {
                 saveItemStatement.TryBindNull("@TopParentId");
             }
@@ -1414,7 +1414,7 @@ namespace Emby.Server.Implementations.Data
 
             var type = _typeMapper.GetType(typeString);
 
-            if (type == null)
+            if (type is null)
             {
                 return null;
             }
@@ -1433,7 +1433,7 @@ namespace Emby.Server.Implementations.Data
                 }
             }
 
-            if (item == null)
+            if (item is null)
             {
                 try
                 {
@@ -1444,7 +1444,7 @@ namespace Emby.Server.Implementations.Data
                 }
             }
 
-            if (item == null)
+            if (item is null)
             {
                 return null;
             }
@@ -2151,7 +2151,7 @@ namespace Emby.Server.Implementations.Data
 
         private static bool EnableJoinUserData(InternalItemsQuery query)
         {
-            if (query.User == null)
+            if (query.User is null)
             {
                 return false;
             }
@@ -2497,7 +2497,7 @@ namespace Emby.Server.Implementations.Data
         {
             var item = query.SimilarTo;
 
-            if (item == null)
+            if (item is null)
             {
                 return;
             }
@@ -4522,7 +4522,7 @@ namespace Emby.Server.Implementations.Data
             if (query.ExcludeInheritedTags.Length > 0)
             {
                 var paramName = "@ExcludeInheritedTags";
-                if (statement == null)
+                if (statement is null)
                 {
                     int index = 0;
                     string excludedTags = string.Join(',', query.ExcludeInheritedTags.Select(_ => paramName + index++));
@@ -4732,7 +4732,7 @@ namespace Emby.Server.Implementations.Data
                 return false;
             }
 
-            if (query.User == null)
+            if (query.User is null)
             {
                 return false;
             }
diff --git a/Emby.Server.Implementations/Dto/DtoService.cs b/Emby.Server.Implementations/Dto/DtoService.cs
index f6d37421a8..e0e3366b4f 100644
--- a/Emby.Server.Implementations/Dto/DtoService.cs
+++ b/Emby.Server.Implementations/Dto/DtoService.cs
@@ -235,14 +235,14 @@ namespace Emby.Server.Implementations.Dto
 
             if (options.ContainsField(ItemFields.CanDelete))
             {
-                dto.CanDelete = user == null
+                dto.CanDelete = user is null
                     ? item.CanDelete()
                     : item.CanDelete(user);
             }
 
             if (options.ContainsField(ItemFields.CanDownload))
             {
-                dto.CanDownload = user == null
+                dto.CanDownload = user is null
                     ? item.CanDownload()
                     : item.CanDownload(user);
             }
@@ -571,7 +571,7 @@ namespace Emby.Server.Implementations.Dto
                         return null;
                     }
                 }).Where(i => i != null)
-                .Where(i => user == null ?
+                .Where(i => user is null ?
                     true :
                     i.IsVisible(user))
                 .GroupBy(i => i.Name, StringComparer.OrdinalIgnoreCase)
@@ -1143,7 +1143,7 @@ namespace Emby.Server.Implementations.Dto
                     if (episodeSeries != null)
                     {
                         dto.SeriesPrimaryImageTag = GetTagAndFillBlurhash(dto, episodeSeries, ImageType.Primary);
-                        if (dto.ImageTags == null || !dto.ImageTags.ContainsKey(ImageType.Primary))
+                        if (dto.ImageTags is null || !dto.ImageTags.ContainsKey(ImageType.Primary))
                         {
                             AttachPrimaryImageAspectRatio(dto, episodeSeries);
                         }
@@ -1193,7 +1193,7 @@ namespace Emby.Server.Implementations.Dto
                     if (series != null)
                     {
                         dto.SeriesPrimaryImageTag = GetTagAndFillBlurhash(dto, series, ImageType.Primary);
-                        if (dto.ImageTags == null || !dto.ImageTags.ContainsKey(ImageType.Primary))
+                        if (dto.ImageTags is null || !dto.ImageTags.ContainsKey(ImageType.Primary))
                         {
                             AttachPrimaryImageAspectRatio(dto, series);
                         }
@@ -1276,7 +1276,7 @@ namespace Emby.Server.Implementations.Dto
 
             var parent = currentItem.DisplayParent ?? currentItem.GetOwner() ?? currentItem.GetParent();
 
-            if (parent == null && originalItem is not UserRootFolder && originalItem is not UserView && originalItem is not AggregateFolder && originalItem is not ICollectionFolder && originalItem is not Channel)
+            if (parent is null && originalItem is not UserRootFolder && originalItem is not UserView && originalItem is not AggregateFolder && originalItem is not ICollectionFolder && originalItem is not Channel)
             {
                 parent = _libraryManager.GetCollectionFolders(originalItem).FirstOrDefault();
             }
@@ -1315,7 +1315,7 @@ namespace Emby.Server.Implementations.Dto
                 || parent is Series)
             {
                 parent ??= isFirst ? GetImageDisplayParent(item, item) ?? owner : parent;
-                if (parent == null)
+                if (parent is null)
                 {
                     break;
                 }
@@ -1403,7 +1403,7 @@ namespace Emby.Server.Implementations.Dto
         {
             var imageInfo = item.GetImageInfo(ImageType.Primary, 0);
 
-            if (imageInfo == null)
+            if (imageInfo is null)
             {
                 return null;
             }
diff --git a/Emby.Server.Implementations/EntryPoints/LibraryChangedNotifier.cs b/Emby.Server.Implementations/EntryPoints/LibraryChangedNotifier.cs
index d5e4a636ef..fb6f52332f 100644
--- a/Emby.Server.Implementations/EntryPoints/LibraryChangedNotifier.cs
+++ b/Emby.Server.Implementations/EntryPoints/LibraryChangedNotifier.cs
@@ -191,7 +191,7 @@ namespace Emby.Server.Implementations.EntryPoints
 
             lock (_libraryChangedSyncLock)
             {
-                if (LibraryUpdateTimer == null)
+                if (LibraryUpdateTimer is null)
                 {
                     LibraryUpdateTimer = new Timer(
                         LibraryUpdateTimerCallback,
@@ -227,7 +227,7 @@ namespace Emby.Server.Implementations.EntryPoints
 
             lock (_libraryChangedSyncLock)
             {
-                if (LibraryUpdateTimer == null)
+                if (LibraryUpdateTimer is null)
                 {
                     LibraryUpdateTimer = new Timer(LibraryUpdateTimerCallback, null, LibraryUpdateDuration, Timeout.Infinite);
                 }
@@ -254,7 +254,7 @@ namespace Emby.Server.Implementations.EntryPoints
 
             lock (_libraryChangedSyncLock)
             {
-                if (LibraryUpdateTimer == null)
+                if (LibraryUpdateTimer is null)
                 {
                     LibraryUpdateTimer = new Timer(LibraryUpdateTimerCallback, null, LibraryUpdateDuration, Timeout.Infinite);
                 }
diff --git a/Emby.Server.Implementations/EntryPoints/UserDataChangeNotifier.cs b/Emby.Server.Implementations/EntryPoints/UserDataChangeNotifier.cs
index 82c8d3ab6d..ce81f9e42f 100644
--- a/Emby.Server.Implementations/EntryPoints/UserDataChangeNotifier.cs
+++ b/Emby.Server.Implementations/EntryPoints/UserDataChangeNotifier.cs
@@ -51,7 +51,7 @@ namespace Emby.Server.Implementations.EntryPoints
 
             lock (_syncLock)
             {
-                if (_updateTimer == null)
+                if (_updateTimer is null)
                 {
                     _updateTimer = new Timer(
                         UpdateTimerCallback,
diff --git a/Emby.Server.Implementations/HttpServer/WebSocketConnection.cs b/Emby.Server.Implementations/HttpServer/WebSocketConnection.cs
index d095248fab..b1a99853ad 100644
--- a/Emby.Server.Implementations/HttpServer/WebSocketConnection.cs
+++ b/Emby.Server.Implementations/HttpServer/WebSocketConnection.cs
@@ -164,7 +164,7 @@ namespace Emby.Server.Implementations.HttpServer
             ReadResult result = await reader.ReadAsync().ConfigureAwait(false);
             ReadOnlySequence<byte> buffer = result.Buffer;
 
-            if (OnReceive == null)
+            if (OnReceive is null)
             {
                 // Tell the PipeReader how much of the buffer we have consumed
                 reader.AdvanceTo(buffer.End);
@@ -185,7 +185,7 @@ namespace Emby.Server.Implementations.HttpServer
                 return;
             }
 
-            if (stub == null)
+            if (stub is null)
             {
                 _logger.LogError("Error processing web socket message");
                 return;
diff --git a/Emby.Server.Implementations/IO/FileRefresher.cs b/Emby.Server.Implementations/IO/FileRefresher.cs
index 6326208f71..6337952c12 100644
--- a/Emby.Server.Implementations/IO/FileRefresher.cs
+++ b/Emby.Server.Implementations/IO/FileRefresher.cs
@@ -80,7 +80,7 @@ namespace Emby.Server.Implementations.IO
                     return;
                 }
 
-                if (_timer == null)
+                if (_timer is null)
                 {
                     _timer = new Timer(OnTimerCallback, null, TimeSpan.FromSeconds(_configurationManager.Configuration.LibraryMonitorDelay), TimeSpan.FromMilliseconds(-1));
                 }
@@ -178,7 +178,7 @@ namespace Emby.Server.Implementations.IO
         {
             BaseItem? item = null;
 
-            while (item == null && !string.IsNullOrEmpty(path))
+            while (item is null && !string.IsNullOrEmpty(path))
             {
                 item = _libraryManager.FindByPath(path, null);
 
@@ -192,7 +192,7 @@ namespace Emby.Server.Implementations.IO
                 {
                     item = item.GetOwner() ?? item.GetParent();
 
-                    if (item == null)
+                    if (item is null)
                     {
                         break;
                     }
diff --git a/Emby.Server.Implementations/Library/LibraryManager.cs b/Emby.Server.Implementations/Library/LibraryManager.cs
index b688af5286..e8f6d2d236 100644
--- a/Emby.Server.Implementations/Library/LibraryManager.cs
+++ b/Emby.Server.Implementations/Library/LibraryManager.cs
@@ -176,7 +176,7 @@ namespace Emby.Server.Implementations.Library
         {
             get
             {
-                if (_rootFolder == null)
+                if (_rootFolder is null)
                 {
                     lock (_rootFolderSyncLock)
                     {
@@ -656,7 +656,7 @@ namespace Emby.Server.Implementations.Library
 
             if (parent != null)
             {
-                var multiItemResolvers = resolvers == null ? MultiItemResolvers : resolvers.OfType<IMultiItemResolver>().ToArray();
+                var multiItemResolvers = resolvers is null ? MultiItemResolvers : resolvers.OfType<IMultiItemResolver>().ToArray();
 
                 foreach (var resolver in multiItemResolvers)
                 {
@@ -770,11 +770,11 @@ namespace Emby.Server.Implementations.Library
 
         public Folder GetUserRootFolder()
         {
-            if (_userRootFolder == null)
+            if (_userRootFolder is null)
             {
                 lock (_userRootFolderSyncLock)
                 {
-                    if (_userRootFolder == null)
+                    if (_userRootFolder is null)
                     {
                         var userRootPath = _configurationManager.ApplicationPaths.DefaultUserViewsPath;
 
@@ -792,7 +792,7 @@ namespace Emby.Server.Implementations.Library
                             _logger.LogError(ex, "Error creating UserRootFolder {Path}", newItemId);
                         }
 
-                        if (tmpItem == null)
+                        if (tmpItem is null)
                         {
                             _logger.LogDebug("Creating new userRootFolder with DeepCopy");
                             tmpItem = ((Folder)ResolvePath(_fileSystem.GetDirectoryInfo(userRootPath))).DeepCopy<Folder, UserRootFolder>();
@@ -961,7 +961,7 @@ namespace Emby.Server.Implementations.Library
             var path = getPathFn(name);
             var id = GetItemByNameId<T>(path);
             var item = GetItemById(id) as T;
-            if (item == null)
+            if (item is null)
             {
                 item = new T
                 {
@@ -1627,7 +1627,7 @@ namespace Emby.Server.Implementations.Library
                 // Get an existing item by Id
                 video = GetItemById(info.ItemId.Value) as Video;
 
-                if (video == null)
+                if (video is null)
                 {
                     _logger.LogError("Unable to locate item with Id {ID}.", info.ItemId.Value);
                 }
@@ -1639,7 +1639,7 @@ namespace Emby.Server.Implementations.Library
                     // Try to resolve the path into a video
                     video = ResolvePath(_fileSystem.GetFileSystemInfo(info.Path)) as Video;
 
-                    if (video == null)
+                    if (video is null)
                     {
                         _logger.LogError("Intro resolver returned null for {Path}.", info.Path);
                     }
@@ -1711,7 +1711,7 @@ namespace Emby.Server.Implementations.Library
             foreach (var (name, sortOrder) in orderBy)
             {
                 var comparer = GetComparer(name, user);
-                if (comparer == null)
+                if (comparer is null)
                 {
                     continue;
                 }
@@ -2010,7 +2010,7 @@ namespace Emby.Server.Implementations.Library
             {
                 var parent = item.GetParent();
 
-                if (parent == null || parent is AggregateFolder)
+                if (parent is null || parent is AggregateFolder)
                 {
                     break;
                 }
@@ -2018,7 +2018,7 @@ namespace Emby.Server.Implementations.Library
                 item = parent;
             }
 
-            if (item == null)
+            if (item is null)
             {
                 return new List<Folder>();
             }
@@ -2032,7 +2032,7 @@ namespace Emby.Server.Implementations.Library
             {
                 var parent = item.GetParent();
 
-                if (parent == null || parent is AggregateFolder)
+                if (parent is null || parent is AggregateFolder)
                 {
                     break;
                 }
@@ -2040,7 +2040,7 @@ namespace Emby.Server.Implementations.Library
                 item = parent;
             }
 
-            if (item == null)
+            if (item is null)
             {
                 return new List<Folder>();
             }
@@ -2064,7 +2064,7 @@ namespace Emby.Server.Implementations.Library
                     .Find(folder => folder is CollectionFolder) as CollectionFolder;
             }
 
-            return collectionFolder == null ? new LibraryOptions() : collectionFolder.GetLibraryOptions();
+            return collectionFolder is null ? new LibraryOptions() : collectionFolder.GetLibraryOptions();
         }
 
         public string GetContentType(BaseItem item)
@@ -2129,7 +2129,7 @@ namespace Emby.Server.Implementations.Library
 
         private string GetTopFolderContentType(BaseItem item)
         {
-            if (item == null)
+            if (item is null)
             {
                 return null;
             }
@@ -2137,7 +2137,7 @@ namespace Emby.Server.Implementations.Library
             while (!item.ParentId.Equals(default))
             {
                 var parent = item.GetParent();
-                if (parent == null || parent is AggregateFolder)
+                if (parent is null || parent is AggregateFolder)
                 {
                     break;
                 }
@@ -2177,7 +2177,7 @@ namespace Emby.Server.Implementations.Library
 
             var refresh = false;
 
-            if (item == null || !string.Equals(item.Path, path, StringComparison.OrdinalIgnoreCase))
+            if (item is null || !string.Equals(item.Path, path, StringComparison.OrdinalIgnoreCase))
             {
                 Directory.CreateDirectory(path);
 
@@ -2225,7 +2225,7 @@ namespace Emby.Server.Implementations.Library
 
             var isNew = false;
 
-            if (item == null)
+            if (item is null)
             {
                 Directory.CreateDirectory(path);
 
@@ -2289,7 +2289,7 @@ namespace Emby.Server.Implementations.Library
 
             var isNew = false;
 
-            if (item == null)
+            if (item is null)
             {
                 Directory.CreateDirectory(path);
 
@@ -2362,7 +2362,7 @@ namespace Emby.Server.Implementations.Library
 
             var isNew = false;
 
-            if (item == null)
+            if (item is null)
             {
                 Directory.CreateDirectory(path);
 
@@ -2459,7 +2459,7 @@ namespace Emby.Server.Implementations.Library
                 episodeInfo = resolver.Resolve(episode.Path, isFolder, null, null, isAbsoluteNaming);
                 // Resolve from parent folder if it's not the Season folder
                 var parent = episode.GetParent();
-                if (episodeInfo == null && parent.GetType() == typeof(Folder))
+                if (episodeInfo is null && parent.GetType() == typeof(Folder))
                 {
                     episodeInfo = resolver.Resolve(parent.Path, true, null, null, isAbsoluteNaming);
                     if (episodeInfo != null)
@@ -2620,7 +2620,7 @@ namespace Emby.Server.Implementations.Library
         public IEnumerable<BaseItem> FindExtras(BaseItem owner, IReadOnlyList<FileSystemMetadata> fileSystemChildren, IDirectoryService directoryService)
         {
             var ownerVideoInfo = VideoResolver.Resolve(owner.Path, owner.IsFolder, _namingOptions);
-            if (ownerVideoInfo == null)
+            if (ownerVideoInfo is null)
             {
                 yield break;
             }
@@ -2754,7 +2754,7 @@ namespace Emby.Server.Implementations.Library
                 }
             })
             .Where(i => i != null)
-            .Where(i => query.User == null ?
+            .Where(i => query.User is null ?
                 true :
                 i.IsVisible(query.User))
             .ToList();
diff --git a/Emby.Server.Implementations/Library/LiveStreamHelper.cs b/Emby.Server.Implementations/Library/LiveStreamHelper.cs
index 20624cc7ae..1010335512 100644
--- a/Emby.Server.Implementations/Library/LiveStreamHelper.cs
+++ b/Emby.Server.Implementations/Library/LiveStreamHelper.cs
@@ -60,7 +60,7 @@ namespace Emby.Server.Implementations.Library
                 }
             }
 
-            if (mediaInfo == null)
+            if (mediaInfo is null)
             {
                 if (addProbeDelay)
                 {
@@ -130,7 +130,7 @@ namespace Emby.Server.Implementations.Library
 
             var audioStream = mediaStreams.FirstOrDefault(i => i.Type == MediaStreamType.Audio);
 
-            if (audioStream == null || audioStream.Index == -1)
+            if (audioStream is null || audioStream.Index == -1)
             {
                 mediaSource.DefaultAudioStreamIndex = null;
             }
diff --git a/Emby.Server.Implementations/Library/MediaSourceManager.cs b/Emby.Server.Implementations/Library/MediaSourceManager.cs
index bfccc7db72..e2474f5081 100644
--- a/Emby.Server.Implementations/Library/MediaSourceManager.cs
+++ b/Emby.Server.Implementations/Library/MediaSourceManager.cs
@@ -383,7 +383,7 @@ namespace Emby.Server.Implementations.Library
             var preferredSubs = NormalizeLanguage(user.SubtitleLanguagePreference);
 
             var defaultAudioIndex = source.DefaultAudioStreamIndex;
-            var audioLangage = defaultAudioIndex == null
+            var audioLangage = defaultAudioIndex is null
                 ? null
                 : source.MediaStreams.Where(i => i.Type == MediaStreamType.Audio && i.Index == defaultAudioIndex).Select(i => i.Language).FirstOrDefault();
 
@@ -417,13 +417,13 @@ namespace Emby.Server.Implementations.Library
         public void SetDefaultAudioAndSubtitleStreamIndexes(BaseItem item, MediaSourceInfo source, User user)
         {
             // Item would only be null if the app didn't supply ItemId as part of the live stream open request
-            var mediaType = item == null ? MediaType.Video : item.MediaType;
+            var mediaType = item is null ? MediaType.Video : item.MediaType;
 
             if (string.Equals(mediaType, MediaType.Video, StringComparison.OrdinalIgnoreCase))
             {
-                var userData = item == null ? new UserItemData() : _userDataManager.GetUserData(user, item);
+                var userData = item is null ? new UserItemData() : _userDataManager.GetUserData(user, item);
 
-                var allowRememberingSelection = item == null || item.EnableRememberingTrackSelections;
+                var allowRememberingSelection = item is null || item.EnableRememberingTrackSelections;
 
                 SetDefaultAudioStreamIndex(source, userData, user, allowRememberingSelection);
                 SetDefaultSubtitleStreamIndex(source, userData, user, allowRememberingSelection);
@@ -543,7 +543,7 @@ namespace Emby.Server.Implementations.Library
 
             var audioStream = mediaSource.MediaStreams.FirstOrDefault(i => i.Type == MediaStreamType.Audio);
 
-            if (audioStream == null || audioStream.Index == -1)
+            if (audioStream is null || audioStream.Index == -1)
             {
                 mediaSource.DefaultAudioStreamIndex = null;
             }
@@ -638,7 +638,7 @@ namespace Emby.Server.Implementations.Library
                 }
             }
 
-            if (mediaInfo == null)
+            if (mediaInfo is null)
             {
                 if (addProbeDelay)
                 {
@@ -713,7 +713,7 @@ namespace Emby.Server.Implementations.Library
 
             var audioStream = mediaStreams.FirstOrDefault(i => i.Type == MediaStreamType.Audio);
 
-            if (audioStream == null || audioStream.Index == -1)
+            if (audioStream is null || audioStream.Index == -1)
             {
                 mediaSource.DefaultAudioStreamIndex = null;
             }
diff --git a/Emby.Server.Implementations/Library/ResolverHelper.cs b/Emby.Server.Implementations/Library/ResolverHelper.cs
index 4100a74a58..590d37b926 100644
--- a/Emby.Server.Implementations/Library/ResolverHelper.cs
+++ b/Emby.Server.Implementations/Library/ResolverHelper.cs
@@ -43,7 +43,7 @@ namespace Emby.Server.Implementations.Library
 
             // Make sure DateCreated and DateModified have values
             var fileInfo = directoryService.GetFile(item.Path);
-            if (fileInfo == null)
+            if (fileInfo is null)
             {
                 return false;
             }
diff --git a/Emby.Server.Implementations/Library/Resolvers/Audio/AudioResolver.cs b/Emby.Server.Implementations/Library/Resolvers/Audio/AudioResolver.cs
index 7a6aea9c1f..bc1f5d08a8 100644
--- a/Emby.Server.Implementations/Library/Resolvers/Audio/AudioResolver.cs
+++ b/Emby.Server.Implementations/Library/Resolvers/Audio/AudioResolver.cs
@@ -116,7 +116,7 @@ namespace Emby.Server.Implementations.Library.Resolvers.Audio
 
                 // Use regular audio type for mixed libraries, owned items and music
                 if (isMixedCollectionType ||
-                    args.Parent == null ||
+                    args.Parent is null ||
                     isMusicCollectionType)
                 {
                     item = new MediaBrowser.Controller.Entities.Audio.Audio();
@@ -144,7 +144,7 @@ namespace Emby.Server.Implementations.Library.Resolvers.Audio
             // TODO: Allow GetMultiDiscMovie in here
             var result = ResolveMultipleAudio(args.Parent, args.GetActualFileSystemChildren(), parseName);
 
-            if (result == null || result.Items.Count != 1 || result.Items[0] is not AudioBook item)
+            if (result is null || result.Items.Count != 1 || result.Items[0] is not AudioBook item)
             {
                 return null;
             }
diff --git a/Emby.Server.Implementations/Library/Resolvers/BaseVideoResolver.cs b/Emby.Server.Implementations/Library/Resolvers/BaseVideoResolver.cs
index b2a7abb1bd..cb377136ad 100644
--- a/Emby.Server.Implementations/Library/Resolvers/BaseVideoResolver.cs
+++ b/Emby.Server.Implementations/Library/Resolvers/BaseVideoResolver.cs
@@ -79,7 +79,7 @@ namespace Emby.Server.Implementations.Library.Resolvers
                         videoType = VideoType.Dvd;
                     }
 
-                    if (videoType == null)
+                    if (videoType is null)
                     {
                         continue;
                     }
@@ -93,7 +93,7 @@ namespace Emby.Server.Implementations.Library.Resolvers
                 videoInfo = VideoResolver.Resolve(args.Path, false, NamingOptions, parseName);
             }
 
-            if (videoInfo == null || (!videoInfo.IsStub && !VideoResolver.IsVideoFile(args.Path, NamingOptions)))
+            if (videoInfo is null || (!videoInfo.IsStub && !VideoResolver.IsVideoFile(args.Path, NamingOptions)))
             {
                 return null;
             }
diff --git a/Emby.Server.Implementations/Library/Resolvers/ExtraResolver.cs b/Emby.Server.Implementations/Library/Resolvers/ExtraResolver.cs
index 408e640f9d..30c52e19d3 100644
--- a/Emby.Server.Implementations/Library/Resolvers/ExtraResolver.cs
+++ b/Emby.Server.Implementations/Library/Resolvers/ExtraResolver.cs
@@ -48,7 +48,7 @@ namespace Emby.Server.Implementations.Library.Resolvers
         public bool TryGetExtraTypeForOwner(string path, VideoFileInfo ownerVideoFileInfo, [NotNullWhen(true)] out ExtraType? extraType)
         {
             var extraResult = GetExtraInfo(path, _namingOptions);
-            if (extraResult.ExtraType == null)
+            if (extraResult.ExtraType is null)
             {
                 extraType = null;
                 return false;
diff --git a/Emby.Server.Implementations/Library/Resolvers/GenericFolderResolver.cs b/Emby.Server.Implementations/Library/Resolvers/GenericFolderResolver.cs
index 0799622825..1c2de912aa 100644
--- a/Emby.Server.Implementations/Library/Resolvers/GenericFolderResolver.cs
+++ b/Emby.Server.Implementations/Library/Resolvers/GenericFolderResolver.cs
@@ -22,7 +22,7 @@ namespace Emby.Server.Implementations.Library.Resolvers
         {
             base.SetInitialItemValues(item, args);
 
-            item.IsRoot = args.Parent == null;
+            item.IsRoot = args.Parent is null;
         }
     }
 }
diff --git a/Emby.Server.Implementations/Library/Resolvers/Movies/MovieResolver.cs b/Emby.Server.Implementations/Library/Resolvers/Movies/MovieResolver.cs
index 84d4688aff..6b18ad237f 100644
--- a/Emby.Server.Implementations/Library/Resolvers/Movies/MovieResolver.cs
+++ b/Emby.Server.Implementations/Library/Resolvers/Movies/MovieResolver.cs
@@ -108,7 +108,7 @@ namespace Emby.Server.Implementations.Library.Resolvers.Movies
                 if (string.IsNullOrEmpty(collectionType))
                 {
                     // Owned items will be caught by the video extra resolver
-                    if (args.Parent == null)
+                    if (args.Parent is null)
                     {
                         return null;
                     }
@@ -127,10 +127,10 @@ namespace Emby.Server.Implementations.Library.Resolvers.Movies
                 }
 
                 // ignore extras
-                return movie?.ExtraType == null ? movie : null;
+                return movie?.ExtraType is null ? movie : null;
             }
 
-            if (args.Parent == null)
+            if (args.Parent is null)
             {
                 return base.Resolve(args);
             }
@@ -205,7 +205,7 @@ namespace Emby.Server.Implementations.Library.Resolvers.Movies
             if (string.IsNullOrEmpty(collectionType))
             {
                 // Owned items should just use the plain video type
-                if (parent == null)
+                if (parent is null)
                 {
                     return ResolveVideos<Video>(parent, files, false, collectionType, false);
                 }
diff --git a/Emby.Server.Implementations/Library/Resolvers/TV/EpisodeResolver.cs b/Emby.Server.Implementations/Library/Resolvers/TV/EpisodeResolver.cs
index 9ba079edfd..2e2b793418 100644
--- a/Emby.Server.Implementations/Library/Resolvers/TV/EpisodeResolver.cs
+++ b/Emby.Server.Implementations/Library/Resolvers/TV/EpisodeResolver.cs
@@ -34,7 +34,7 @@ namespace Emby.Server.Implementations.Library.Resolvers.TV
         {
             var parent = args.Parent;
 
-            if (parent == null)
+            if (parent is null)
             {
                 return null;
             }
@@ -53,7 +53,7 @@ namespace Emby.Server.Implementations.Library.Resolvers.TV
                 var episode = ResolveVideo<Episode>(args, false);
 
                 // Ignore extras
-                if (episode == null || episode.ExtraType != null)
+                if (episode is null || episode.ExtraType != null)
                 {
                     return null;
                 }
@@ -73,7 +73,7 @@ namespace Emby.Server.Implementations.Library.Resolvers.TV
                 }
 
                 // Assume season 1 if there's no season folder and a season number could not be determined
-                if (season == null && !episode.ParentIndexNumber.HasValue && (episode.IndexNumber.HasValue || episode.PremiereDate.HasValue))
+                if (season is null && !episode.ParentIndexNumber.HasValue && (episode.IndexNumber.HasValue || episode.PremiereDate.HasValue))
                 {
                     episode.ParentIndexNumber = 1;
                 }
diff --git a/Emby.Server.Implementations/Library/UserViewManager.cs b/Emby.Server.Implementations/Library/UserViewManager.cs
index ec411aa3ba..c294a63db6 100644
--- a/Emby.Server.Implementations/Library/UserViewManager.cs
+++ b/Emby.Server.Implementations/Library/UserViewManager.cs
@@ -47,7 +47,7 @@ namespace Emby.Server.Implementations.Library
         {
             var user = _userManager.GetUserById(query.UserId);
 
-            if (user == null)
+            if (user is null)
             {
                 throw new ArgumentException("User Id specified in the query does not exist.", nameof(query));
             }
@@ -208,7 +208,7 @@ namespace Emby.Server.Implementations.Library
                 // Only grab the index container for media
                 var container = item.IsFolder || !request.GroupItems ? null : item.LatestItemsIndexContainer;
 
-                if (container == null)
+                if (container is null)
                 {
                     list.Add(new Tuple<BaseItem, List<BaseItem>>(null, new List<BaseItem> { item }));
                 }
diff --git a/Emby.Server.Implementations/Library/Validators/CollectionPostScanTask.cs b/Emby.Server.Implementations/Library/Validators/CollectionPostScanTask.cs
index 88b93a2115..df45793c3a 100644
--- a/Emby.Server.Implementations/Library/Validators/CollectionPostScanTask.cs
+++ b/Emby.Server.Implementations/Library/Validators/CollectionPostScanTask.cs
@@ -118,7 +118,7 @@ namespace Emby.Server.Implementations.Library.Validators
                 try
                 {
                     var boxSet = boxSets.FirstOrDefault(b => b?.Name == collectionName) as BoxSet;
-                    if (boxSet == null)
+                    if (boxSet is null)
                     {
                         // won't automatically create collection if only one movie in it
                         if (movieIds.Count >= 2)
diff --git a/Emby.Server.Implementations/LiveTv/EmbyTV/EmbyTV.cs b/Emby.Server.Implementations/LiveTv/EmbyTV/EmbyTV.cs
index cf9be5a54a..2f4854a6dd 100644
--- a/Emby.Server.Implementations/LiveTv/EmbyTV/EmbyTV.cs
+++ b/Emby.Server.Implementations/LiveTv/EmbyTV/EmbyTV.cs
@@ -295,7 +295,7 @@ namespace Emby.Server.Implementations.LiveTv.EmbyTV
                 }
 
                 var program = GetProgramInfoFromCache(timer);
-                if (program == null)
+                if (program is null)
                 {
                     OnTimerOutOfDate(timer);
                     continue;
@@ -642,7 +642,7 @@ namespace Emby.Server.Implementations.LiveTv.EmbyTV
                 programInfo = GetProgramInfoFromCache(info);
             }
 
-            if (programInfo == null)
+            if (programInfo is null)
             {
                 _logger.LogInformation("Unable to find program with Id {0}. Will search using start date", info.ProgramId);
                 programInfo = GetProgramInfoFromCache(info.ChannelId, info.StartDate);
@@ -744,7 +744,7 @@ namespace Emby.Server.Implementations.LiveTv.EmbyTV
         {
             var existingTimer = _timerProvider.GetTimer(updatedTimer.Id);
 
-            if (existingTimer == null)
+            if (existingTimer is null)
             {
                 throw new ResourceNotFoundException();
             }
@@ -912,7 +912,7 @@ namespace Emby.Server.Implementations.LiveTv.EmbyTV
 
                 var epgChannel = await GetEpgChannelFromTunerChannel(provider.Item1, provider.Item2, channel, cancellationToken).ConfigureAwait(false);
 
-                if (epgChannel == null)
+                if (epgChannel is null)
                 {
                     _logger.LogDebug("EPG channel not found for tuner channel {0}-{1} from {2}-{3}", channel.Number, channel.Name, provider.Item1.Name, provider.Item2.ListingsId ?? string.Empty);
                     continue;
@@ -945,7 +945,7 @@ namespace Emby.Server.Implementations.LiveTv.EmbyTV
                 {
                     var provider = _liveTvManager.ListingProviders.FirstOrDefault(l => string.Equals(l.Type, i.Type, StringComparison.OrdinalIgnoreCase));
 
-                    return provider == null ? null : new Tuple<IListingsProvider, ListingsProviderInfo>(provider, i);
+                    return provider is null ? null : new Tuple<IListingsProvider, ListingsProviderInfo>(provider, i);
                 })
                 .Where(i => i != null)
                 .ToList();
@@ -1232,7 +1232,7 @@ namespace Emby.Server.Implementations.LiveTv.EmbyTV
                 programInfo = GetProgramInfoFromCache(timer);
             }
 
-            if (programInfo == null)
+            if (programInfo is null)
             {
                 _logger.LogInformation("Unable to find program with Id {0}. Will search using start date", timer.ProgramId);
                 programInfo = GetProgramInfoFromCache(timer.ChannelId, timer.StartDate);
@@ -1437,7 +1437,7 @@ namespace Emby.Server.Implementations.LiveTv.EmbyTV
 
             var parentPath = Path.GetDirectoryName(path);
 
-            while (item == null && !string.IsNullOrEmpty(path))
+            while (item is null && !string.IsNullOrEmpty(path))
             {
                 item = _libraryManager.FindByPath(path, null);
 
@@ -1474,7 +1474,7 @@ namespace Emby.Server.Implementations.LiveTv.EmbyTV
             var seriesTimerId = timer.SeriesTimerId;
             var seriesTimer = _seriesTimerProvider.GetAll().FirstOrDefault(i => string.Equals(i.Id, seriesTimerId, StringComparison.OrdinalIgnoreCase));
 
-            if (seriesTimer == null || seriesTimer.KeepUpTo <= 0)
+            if (seriesTimer is null || seriesTimer.KeepUpTo <= 0)
             {
                 return;
             }
@@ -1695,7 +1695,7 @@ namespace Emby.Server.Implementations.LiveTv.EmbyTV
                 _ => null
             };
 
-            if (imageSaveFilenameWithoutExtension == null)
+            if (imageSaveFilenameWithoutExtension is null)
             {
                 return;
             }
@@ -1782,7 +1782,7 @@ namespace Emby.Server.Implementations.LiveTv.EmbyTV
                 }).FirstOrDefault() as LiveTvProgram;
 
                 // dummy this up
-                if (program == null)
+                if (program is null)
                 {
                     program = new LiveTvProgram
                     {
@@ -2240,7 +2240,7 @@ namespace Emby.Server.Implementations.LiveTv.EmbyTV
                         ? null
                         : _timerProvider.GetTimerByProgramId(timer.ProgramId));
 
-                if (existingTimer == null)
+                if (existingTimer is null)
                 {
                     if (ShouldCancelTimerForSeriesTimer(seriesTimer, timer))
                     {
diff --git a/Emby.Server.Implementations/LiveTv/EmbyTV/ItemDataProvider.cs b/Emby.Server.Implementations/LiveTv/EmbyTV/ItemDataProvider.cs
index 58b798ce67..80e3e5233f 100644
--- a/Emby.Server.Implementations/LiveTv/EmbyTV/ItemDataProvider.cs
+++ b/Emby.Server.Implementations/LiveTv/EmbyTV/ItemDataProvider.cs
@@ -49,7 +49,7 @@ namespace Emby.Server.Implementations.LiveTv.EmbyTV
                 {
                     var bytes = File.ReadAllBytes(_dataPath);
                     _items = JsonSerializer.Deserialize<T[]>(bytes, _jsonOptions);
-                    if (_items == null)
+                    if (_items is null)
                     {
                         Logger.LogError("Error deserializing {Path}, data was null", _dataPath);
                         _items = Array.Empty<T>();
diff --git a/Emby.Server.Implementations/LiveTv/Listings/SchedulesDirect.cs b/Emby.Server.Implementations/LiveTv/Listings/SchedulesDirect.cs
index b981ad81a7..69670e8110 100644
--- a/Emby.Server.Implementations/LiveTv/Listings/SchedulesDirect.cs
+++ b/Emby.Server.Implementations/LiveTv/Listings/SchedulesDirect.cs
@@ -111,7 +111,7 @@ namespace Emby.Server.Implementations.LiveTv.Listings
             using var response = await Send(options, true, info, cancellationToken).ConfigureAwait(false);
             await using var responseStream = await response.Content.ReadAsStreamAsync(cancellationToken).ConfigureAwait(false);
             var dailySchedules = await JsonSerializer.DeserializeAsync<IReadOnlyList<DayDto>>(responseStream, _jsonOptions, cancellationToken).ConfigureAwait(false);
-            if (dailySchedules == null)
+            if (dailySchedules is null)
             {
                 return Array.Empty<ProgramInfo>();
             }
@@ -127,7 +127,7 @@ namespace Emby.Server.Implementations.LiveTv.Listings
             using var innerResponse = await Send(programRequestOptions, true, info, cancellationToken).ConfigureAwait(false);
             await using var innerResponseStream = await innerResponse.Content.ReadAsStreamAsync(cancellationToken).ConfigureAwait(false);
             var programDetails = await JsonSerializer.DeserializeAsync<IReadOnlyList<ProgramDetailsDto>>(innerResponseStream, _jsonOptions, cancellationToken).ConfigureAwait(false);
-            if (programDetails == null)
+            if (programDetails is null)
             {
                 return Array.Empty<ProgramInfo>();
             }
@@ -228,7 +228,7 @@ namespace Emby.Server.Implementations.LiveTv.Listings
 
         private ProgramInfo GetProgram(string channelId, ProgramDto programInfo, ProgramDetailsDto details)
         {
-            if (programInfo.AirDateTime == null)
+            if (programInfo.AirDateTime is null)
             {
                 return null;
             }
@@ -283,7 +283,7 @@ namespace Emby.Server.Implementations.LiveTv.Listings
                 EpisodeTitle = episodeTitle,
                 Audio = audioType,
                 // IsNew = programInfo.@new ?? false,
-                IsRepeat = programInfo.New == null,
+                IsRepeat = programInfo.New is null,
                 IsSeries = string.Equals(details.EntityType, "episode", StringComparison.OrdinalIgnoreCase),
                 ImageUrl = details.PrimaryImage,
                 ThumbImageUrl = details.ThumbImage,
@@ -407,7 +407,7 @@ namespace Emby.Server.Implementations.LiveTv.Listings
                 .ThenByDescending(i => GetSizeOrder(i))
                 .FirstOrDefault();
 
-            if (match == null)
+            if (match is null)
             {
                 return null;
             }
@@ -785,7 +785,7 @@ namespace Emby.Server.Implementations.LiveTv.Listings
             using var httpResponse = await Send(options, true, info, cancellationToken).ConfigureAwait(false);
             await using var stream = await httpResponse.Content.ReadAsStreamAsync(cancellationToken).ConfigureAwait(false);
             var root = await JsonSerializer.DeserializeAsync<ChannelDto>(stream, _jsonOptions, cancellationToken).ConfigureAwait(false);
-            if (root == null)
+            if (root is null)
             {
                 return new List<ChannelInfo>();
             }
diff --git a/Emby.Server.Implementations/LiveTv/Listings/XmlTvListingsProvider.cs b/Emby.Server.Implementations/LiveTv/Listings/XmlTvListingsProvider.cs
index 264eec947a..1b72a44b4b 100644
--- a/Emby.Server.Implementations/LiveTv/Listings/XmlTvListingsProvider.cs
+++ b/Emby.Server.Implementations/LiveTv/Listings/XmlTvListingsProvider.cs
@@ -162,7 +162,7 @@ namespace Emby.Server.Implementations.LiveTv.Listings
                 HasImage = !string.IsNullOrEmpty(program.Icon?.Source),
                 OfficialRating = string.IsNullOrEmpty(program.Rating?.Value) ? null : program.Rating.Value,
                 CommunityRating = program.StarRating,
-                SeriesId = program.Episode == null ? null : program.Title?.GetMD5().ToString("N", CultureInfo.InvariantCulture)
+                SeriesId = program.Episode is null ? null : program.Title?.GetMD5().ToString("N", CultureInfo.InvariantCulture)
             };
 
             if (string.IsNullOrWhiteSpace(program.ProgramId))
diff --git a/Emby.Server.Implementations/LiveTv/LiveTvDtoService.cs b/Emby.Server.Implementations/LiveTv/LiveTvDtoService.cs
index c09f9cf8d0..a92b473b5d 100644
--- a/Emby.Server.Implementations/LiveTv/LiveTvDtoService.cs
+++ b/Emby.Server.Implementations/LiveTv/LiveTvDtoService.cs
@@ -150,7 +150,7 @@ namespace Emby.Server.Implementations.LiveTv
                 dto.ProgramId = GetInternalProgramId(info.ProgramId).ToString("N", CultureInfo.InvariantCulture);
             }
 
-            dto.DayPattern = info.Days == null ? null : GetDayPattern(info.Days.ToArray());
+            dto.DayPattern = info.Days is null ? null : GetDayPattern(info.Days.ToArray());
 
             FillImages(dto, info.Name, info.SeriesId);
 
@@ -228,7 +228,7 @@ namespace Emby.Server.Implementations.LiveTv
                     }
                 }
 
-                if (dto.ParentBackdropImageTags == null || dto.ParentBackdropImageTags.Length == 0)
+                if (dto.ParentBackdropImageTags is null || dto.ParentBackdropImageTags.Length == 0)
                 {
                     image = program.GetImageInfo(ImageType.Backdrop, 0);
                     if (image != null)
@@ -305,7 +305,7 @@ namespace Emby.Server.Implementations.LiveTv
                 DtoOptions = new DtoOptions(false)
             }).FirstOrDefault();
 
-            if (program == null)
+            if (program is null)
             {
                 program = _libraryManager.GetItemList(new InternalItemsQuery
                 {
@@ -334,7 +334,7 @@ namespace Emby.Server.Implementations.LiveTv
                     }
                 }
 
-                if (dto.ParentBackdropImageTags == null || dto.ParentBackdropImageTags.Length == 0)
+                if (dto.ParentBackdropImageTags is null || dto.ParentBackdropImageTags.Length == 0)
                 {
                     image = program.GetImageInfo(ImageType.Backdrop, 0);
                     if (image != null)
diff --git a/Emby.Server.Implementations/LiveTv/LiveTvManager.cs b/Emby.Server.Implementations/LiveTv/LiveTvManager.cs
index 97c2e6e306..ea26a2227f 100644
--- a/Emby.Server.Implementations/LiveTv/LiveTvManager.cs
+++ b/Emby.Server.Implementations/LiveTv/LiveTvManager.cs
@@ -434,7 +434,7 @@ namespace Emby.Server.Implementations.LiveTv
 
             var item = _libraryManager.GetItemById(id) as LiveTvChannel;
 
-            if (item == null)
+            if (item is null)
             {
                 item = new LiveTvChannel
                 {
@@ -948,7 +948,7 @@ namespace Emby.Server.Implementations.LiveTv
 
             var channel = _libraryManager.GetItemById(program.ChannelId);
 
-            if (channel == null)
+            if (channel is null)
             {
                 return score;
             }
@@ -1314,7 +1314,7 @@ namespace Emby.Server.Implementations.LiveTv
 
         private QueryResult<BaseItem> GetEmbyRecordings(RecordingQuery query, DtoOptions dtoOptions, User user)
         {
-            if (user == null)
+            if (user is null)
             {
                 return new QueryResult<BaseItem>();
             }
@@ -1702,7 +1702,7 @@ namespace Emby.Server.Implementations.LiveTv
         {
             var timer = await GetTimer(id, CancellationToken.None).ConfigureAwait(false);
 
-            if (timer == null)
+            if (timer is null)
             {
                 throw new ResourceNotFoundException(string.Format(CultureInfo.InvariantCulture, "Timer with Id {0} not found", id));
             }
@@ -1721,7 +1721,7 @@ namespace Emby.Server.Implementations.LiveTv
         {
             var timer = await GetSeriesTimer(id, CancellationToken.None).ConfigureAwait(false);
 
-            if (timer == null)
+            if (timer is null)
             {
                 throw new ResourceNotFoundException(string.Format(CultureInfo.InvariantCulture, "SeriesTimer with Id {0} not found", id));
             }
@@ -1834,7 +1834,7 @@ namespace Emby.Server.Implementations.LiveTv
                     {
                         var internalChannelId = _tvDtoService.GetInternalChannelId(i.Item2.Name, i.Item1.ChannelId);
                         var channel = _libraryManager.GetItemById(internalChannelId);
-                        channelName = channel == null ? null : channel.Name;
+                        channelName = channel is null ? null : channel.Name;
                     }
 
                     return _tvDtoService.GetSeriesTimerInfoDto(i.Item1, i.Item2, channelName);
@@ -2147,7 +2147,7 @@ namespace Emby.Server.Implementations.LiveTv
 
             var service = _services.FirstOrDefault(i => string.Equals(i.GetType().FullName.GetMD5().ToString("N", CultureInfo.InvariantCulture), parts[0], StringComparison.OrdinalIgnoreCase));
 
-            if (service == null)
+            if (service is null)
             {
                 throw new ArgumentException("Service not found.");
             }
@@ -2178,7 +2178,7 @@ namespace Emby.Server.Implementations.LiveTv
 
             var provider = _tunerHosts.FirstOrDefault(i => string.Equals(info.Type, i.Type, StringComparison.OrdinalIgnoreCase));
 
-            if (provider == null)
+            if (provider is null)
             {
                 throw new ResourceNotFoundException();
             }
@@ -2222,7 +2222,7 @@ namespace Emby.Server.Implementations.LiveTv
 
             var provider = _listingProviders.FirstOrDefault(i => string.Equals(info.Type, i.Type, StringComparison.OrdinalIgnoreCase));
 
-            if (provider == null)
+            if (provider is null)
             {
                 throw new ResourceNotFoundException(
                     string.Format(
@@ -2334,7 +2334,7 @@ namespace Emby.Server.Implementations.LiveTv
             {
                 var provider = _listingProviders.FirstOrDefault(i => string.Equals(providerType, i.Type, StringComparison.OrdinalIgnoreCase));
 
-                if (provider == null)
+                if (provider is null)
                 {
                     throw new ResourceNotFoundException();
                 }
@@ -2347,7 +2347,7 @@ namespace Emby.Server.Implementations.LiveTv
 
                 var provider = _listingProviders.FirstOrDefault(i => string.Equals(info.Type, i.Type, StringComparison.OrdinalIgnoreCase));
 
-                if (provider == null)
+                if (provider is null)
                 {
                     throw new ResourceNotFoundException();
                 }
diff --git a/Emby.Server.Implementations/LiveTv/TunerHosts/HdHomerun/HdHomerunHost.cs b/Emby.Server.Implementations/LiveTv/TunerHosts/HdHomerun/HdHomerunHost.cs
index e0eaa8e585..04d64e5006 100644
--- a/Emby.Server.Implementations/LiveTv/TunerHosts/HdHomerun/HdHomerunHost.cs
+++ b/Emby.Server.Implementations/LiveTv/TunerHosts/HdHomerun/HdHomerunHost.cs
@@ -302,7 +302,7 @@ namespace Emby.Server.Implementations.LiveTv.TunerHosts.HdHomerun
 
             var hdHomerunChannelInfo = channels.FirstOrDefault() as HdHomerunChannelInfo;
 
-            if (hdHomerunChannelInfo == null || hdHomerunChannelInfo.IsLegacyTuner)
+            if (hdHomerunChannelInfo is null || hdHomerunChannelInfo.IsLegacyTuner)
             {
                 return await GetTunerInfosUdp(info, cancellationToken).ConfigureAwait(false);
             }
diff --git a/Emby.Server.Implementations/Localization/LocalizationManager.cs b/Emby.Server.Implementations/Localization/LocalizationManager.cs
index b771681266..8f15a155ed 100644
--- a/Emby.Server.Implementations/Localization/LocalizationManager.cs
+++ b/Emby.Server.Implementations/Localization/LocalizationManager.cs
@@ -329,14 +329,14 @@ namespace Emby.Server.Implementations.Localization
         {
             await using var stream = _assembly.GetManifestResourceStream(resourcePath);
             // If a Culture doesn't have a translation the stream will be null and it defaults to en-us further up the chain
-            if (stream == null)
+            if (stream is null)
             {
                 _logger.LogError("Missing translation/culture resource: {ResourcePath}", resourcePath);
                 return;
             }
 
             var dict = await JsonSerializer.DeserializeAsync<Dictionary<string, string>>(stream, _jsonOptions).ConfigureAwait(false);
-            if (dict == null)
+            if (dict is null)
             {
                 throw new InvalidOperationException($"Resource contains invalid data: '{stream}'");
             }
diff --git a/Emby.Server.Implementations/Playlists/PlaylistManager.cs b/Emby.Server.Implementations/Playlists/PlaylistManager.cs
index 9e7035cb31..d8d4629c1f 100644
--- a/Emby.Server.Implementations/Playlists/PlaylistManager.cs
+++ b/Emby.Server.Implementations/Playlists/PlaylistManager.cs
@@ -70,7 +70,7 @@ namespace Emby.Server.Implementations.Playlists
 
             var folderName = _fileSystem.GetValidFilename(name);
             var parentFolder = GetPlaylistsFolder(Guid.Empty);
-            if (parentFolder == null)
+            if (parentFolder is null)
             {
                 throw new ArgumentException(nameof(parentFolder));
             }
@@ -81,7 +81,7 @@ namespace Emby.Server.Implementations.Playlists
                 {
                     var item = _libraryManager.GetItemById(itemId);
 
-                    if (item == null)
+                    if (item is null)
                     {
                         throw new ArgumentException("No item exists with the supplied Id");
                     }
diff --git a/Emby.Server.Implementations/Playlists/PlaylistsFolder.cs b/Emby.Server.Implementations/Playlists/PlaylistsFolder.cs
index 8ec9f61616..e2f2e436f2 100644
--- a/Emby.Server.Implementations/Playlists/PlaylistsFolder.cs
+++ b/Emby.Server.Implementations/Playlists/PlaylistsFolder.cs
@@ -39,7 +39,7 @@ namespace Emby.Server.Implementations.Playlists
 
         protected override QueryResult<BaseItem> GetItemsInternal(InternalItemsQuery query)
         {
-            if (query.User == null)
+            if (query.User is null)
             {
                 query.Recursive = false;
                 return base.GetItemsInternal(query);
diff --git a/Emby.Server.Implementations/Plugins/PluginManager.cs b/Emby.Server.Implementations/Plugins/PluginManager.cs
index 3f7d46822e..c1a38d23ca 100644
--- a/Emby.Server.Implementations/Plugins/PluginManager.cs
+++ b/Emby.Server.Implementations/Plugins/PluginManager.cs
@@ -174,7 +174,7 @@ namespace Emby.Server.Implementations.Plugins
             foreach (var pluginServiceRegistrator in _appHost.GetExportTypes<IPluginServiceRegistrator>())
             {
                 var plugin = GetPluginByAssembly(pluginServiceRegistrator.Assembly);
-                if (plugin == null)
+                if (plugin is null)
                 {
                     _logger.LogError("Unable to find plugin in assembly {Assembly}", pluginServiceRegistrator.Assembly.FullName);
                     continue;
@@ -263,7 +263,7 @@ namespace Emby.Server.Implementations.Plugins
         {
             LocalPlugin? plugin;
 
-            if (version == null)
+            if (version is null)
             {
                 // If no version is given, return the current instance.
                 var plugins = _plugins.Where(p => p.Id.Equals(id)).ToList();
@@ -320,7 +320,7 @@ namespace Emby.Server.Implementations.Plugins
             ArgumentNullException.ThrowIfNull(assembly);
 
             var plugin = _plugins.FirstOrDefault(p => p.DllFiles.Contains(assembly.Location));
-            if (plugin == null)
+            if (plugin is null)
             {
                 // A plugin's assembly didn't cause this issue, so ignore it.
                 return;
@@ -442,7 +442,7 @@ namespace Emby.Server.Implementations.Plugins
                 _logger.LogDebug("Creating instance of {Type}", type);
                 // _appHost.ServiceProvider is already assigned when we create the plugins
                 var instance = (IPlugin)ActivatorUtilities.CreateInstance(_appHost.ServiceProvider!, type);
-                if (plugin == null)
+                if (plugin is null)
                 {
                     // Create a dummy record for the providers.
                     // TODO: remove this code once all provided have been released as separate plugins.
@@ -711,7 +711,7 @@ namespace Emby.Server.Implementations.Plugins
                     && p.IsEnabledAndSupported
                     && p.Version != plugin.Version);
 
-            if (previousVersion == null)
+            if (previousVersion is null)
             {
                 // This value is memory only - so that the web will show restart required.
                 plugin.Manifest.Status = PluginStatus.Restart;
diff --git a/Emby.Server.Implementations/ScheduledTasks/ScheduledTaskWorker.cs b/Emby.Server.Implementations/ScheduledTasks/ScheduledTaskWorker.cs
index b370e06efa..25515f7787 100644
--- a/Emby.Server.Implementations/ScheduledTasks/ScheduledTaskWorker.cs
+++ b/Emby.Server.Implementations/ScheduledTasks/ScheduledTaskWorker.cs
@@ -128,7 +128,7 @@ namespace Emby.Server.Implementations.ScheduledTasks
 
                 lock (_lastExecutionResultSyncLock)
                 {
-                    if (_lastExecutionResult == null && !_readFromFile)
+                    if (_lastExecutionResult is null && !_readFromFile)
                     {
                         if (File.Exists(path))
                         {
diff --git a/Emby.Server.Implementations/ScheduledTasks/TaskManager.cs b/Emby.Server.Implementations/ScheduledTasks/TaskManager.cs
index 0431858fca..63f0beb105 100644
--- a/Emby.Server.Implementations/ScheduledTasks/TaskManager.cs
+++ b/Emby.Server.Implementations/ScheduledTasks/TaskManager.cs
@@ -94,7 +94,7 @@ namespace Emby.Server.Implementations.ScheduledTasks
         {
             var scheduledTask = ScheduledTasks.FirstOrDefault(t => t.ScheduledTask.GetType() == typeof(T));
 
-            if (scheduledTask == null)
+            if (scheduledTask is null)
             {
                 _logger.LogError("Unable to find scheduled task of type {0} in QueueScheduledTask.", typeof(T).Name);
             }
@@ -126,7 +126,7 @@ namespace Emby.Server.Implementations.ScheduledTasks
         {
             var scheduledTask = ScheduledTasks.FirstOrDefault(t => t.ScheduledTask.GetType() == typeof(T));
 
-            if (scheduledTask == null)
+            if (scheduledTask is null)
             {
                 _logger.LogError("Unable to find scheduled task of type {0} in Execute.", typeof(T).Name);
             }
@@ -155,7 +155,7 @@ namespace Emby.Server.Implementations.ScheduledTasks
         {
             var scheduledTask = ScheduledTasks.FirstOrDefault(t => t.ScheduledTask.GetType() == task.GetType());
 
-            if (scheduledTask == null)
+            if (scheduledTask is null)
             {
                 _logger.LogError("Unable to find scheduled task of type {0} in QueueScheduledTask.", task.GetType().Name);
             }
diff --git a/Emby.Server.Implementations/ScheduledTasks/Triggers/IntervalTrigger.cs b/Emby.Server.Implementations/ScheduledTasks/Triggers/IntervalTrigger.cs
index 3eb800199d..e9b8a8257f 100644
--- a/Emby.Server.Implementations/ScheduledTasks/Triggers/IntervalTrigger.cs
+++ b/Emby.Server.Implementations/ScheduledTasks/Triggers/IntervalTrigger.cs
@@ -50,7 +50,7 @@ namespace Emby.Server.Implementations.ScheduledTasks.Triggers
 
             DateTime triggerDate;
 
-            if (lastResult == null)
+            if (lastResult is null)
             {
                 // Task has never been completed before
                 triggerDate = DateTime.UtcNow.AddHours(1);
diff --git a/Emby.Server.Implementations/Session/SessionManager.cs b/Emby.Server.Implementations/Session/SessionManager.cs
index 0d1029882b..a1e3b9dbd9 100644
--- a/Emby.Server.Implementations/Session/SessionManager.cs
+++ b/Emby.Server.Implementations/Session/SessionManager.cs
@@ -377,11 +377,11 @@ namespace Emby.Server.Implementations.Session
                 info.MediaSourceId = info.ItemId.ToString("N", CultureInfo.InvariantCulture);
             }
 
-            if (!info.ItemId.Equals(default) && info.Item == null && libraryItem != null)
+            if (!info.ItemId.Equals(default) && info.Item is null && libraryItem != null)
             {
                 var current = session.NowPlayingItem;
 
-                if (current == null || !info.ItemId.Equals(current.Id))
+                if (current is null || !info.ItemId.Equals(current.Id))
                 {
                     var runtimeTicks = libraryItem.RunTimeTicks;
 
@@ -495,7 +495,7 @@ namespace Emby.Server.Implementations.Session
 
             sessionInfo.UserId = user?.Id ?? Guid.Empty;
             sessionInfo.UserName = user?.Username;
-            sessionInfo.UserPrimaryImageTag = user?.ProfileImage == null ? null : GetImageCacheTag(user);
+            sessionInfo.UserPrimaryImageTag = user?.ProfileImage is null ? null : GetImageCacheTag(user);
             sessionInfo.RemoteEndPoint = remoteEndPoint;
             sessionInfo.Client = appName;
 
@@ -506,7 +506,7 @@ namespace Emby.Server.Implementations.Session
 
             sessionInfo.ApplicationVersion = appVersion;
 
-            if (user == null)
+            if (user is null)
             {
                 sessionInfo.AdditionalUsers = Array.Empty<SessionUserInfo>();
             }
@@ -536,7 +536,7 @@ namespace Emby.Server.Implementations.Session
 
             sessionInfo.UserId = user?.Id ?? Guid.Empty;
             sessionInfo.UserName = username;
-            sessionInfo.UserPrimaryImageTag = user?.ProfileImage == null ? null : GetImageCacheTag(user);
+            sessionInfo.UserPrimaryImageTag = user?.ProfileImage is null ? null : GetImageCacheTag(user);
             sessionInfo.RemoteEndPoint = remoteEndPoint;
 
             if (string.IsNullOrEmpty(deviceName))
@@ -570,7 +570,7 @@ namespace Emby.Server.Implementations.Session
 
             var user = _userManager.GetUserById(session.UserId);
 
-            if (user == null)
+            if (user is null)
             {
                 throw new InvalidOperationException("User not found");
             }
@@ -618,7 +618,7 @@ namespace Emby.Server.Implementations.Session
                         await OnPlaybackStopped(new PlaybackStopInfo
                         {
                             Item = session.NowPlayingItem,
-                            ItemId = session.NowPlayingItem == null ? Guid.Empty : session.NowPlayingItem.Id,
+                            ItemId = session.NowPlayingItem is null ? Guid.Empty : session.NowPlayingItem.Id,
                             SessionId = session.Id,
                             MediaSourceId = session.PlayState?.MediaSourceId,
                             PositionTicks = session.PlayState?.PositionTicks
@@ -912,11 +912,11 @@ namespace Emby.Server.Implementations.Session
                 info.MediaSourceId = info.ItemId.ToString("N", CultureInfo.InvariantCulture);
             }
 
-            if (!info.ItemId.Equals(default) && info.Item == null && libraryItem != null)
+            if (!info.ItemId.Equals(default) && info.Item is null && libraryItem != null)
             {
                 var current = session.NowPlayingItem;
 
-                if (current == null || !info.ItemId.Equals(current.Id))
+                if (current is null || !info.ItemId.Equals(current.Id))
                 {
                     MediaSourceInfo mediaSource = null;
 
@@ -1037,7 +1037,7 @@ namespace Emby.Server.Implementations.Session
         private SessionInfo GetSession(string sessionId, bool throwOnMissing = true)
         {
             var session = Sessions.FirstOrDefault(i => string.Equals(i.Id, sessionId, StringComparison.Ordinal));
-            if (session == null && throwOnMissing)
+            if (session is null && throwOnMissing)
             {
                 throw new ResourceNotFoundException(
                     string.Format(CultureInfo.InvariantCulture, "Session {0} not found.", sessionId));
@@ -1051,7 +1051,7 @@ namespace Emby.Server.Implementations.Session
             // Accept either device id or session id
             var session = Sessions.FirstOrDefault(i => string.Equals(i.Id, sessionId, StringComparison.Ordinal));
 
-            if (session == null)
+            if (session is null)
             {
                 throw new ResourceNotFoundException(
                     string.Format(CultureInfo.InvariantCulture, "Session {0} not found.", sessionId));
@@ -1231,7 +1231,7 @@ namespace Emby.Server.Implementations.Session
         {
             var item = _libraryManager.GetItemById(id);
 
-            if (item == null)
+            if (item is null)
             {
                 _logger.LogError("A non-existent item Id {0} was passed into TranslateItemForPlayback", id);
                 return Array.Empty<BaseItem>();
@@ -1284,7 +1284,7 @@ namespace Emby.Server.Implementations.Session
         {
             var item = _libraryManager.GetItemById(id);
 
-            if (item == null)
+            if (item is null)
             {
                 _logger.LogError("A non-existent item Id {0} was passed into TranslateItemForInstantMix", id);
                 return new List<BaseItem>();
@@ -1480,7 +1480,7 @@ namespace Emby.Server.Implementations.Session
                     true).ConfigureAwait(false);
             }
 
-            if (user == null)
+            if (user is null)
             {
                 AuthenticationFailed?.Invoke(this, new GenericEventArgs<AuthenticationRequest>(request));
                 throw new AuthenticationException("Invalid username or password entered.");
@@ -1541,7 +1541,7 @@ namespace Emby.Server.Implementations.Session
 
             foreach (var auth in allExistingForDevice)
             {
-                if (existing == null || !string.Equals(auth.AccessToken, existing.AccessToken, StringComparison.Ordinal))
+                if (existing is null || !string.Equals(auth.AccessToken, existing.AccessToken, StringComparison.Ordinal))
                 {
                     try
                     {
@@ -1677,7 +1677,7 @@ namespace Emby.Server.Implementations.Session
 
             var dtoOptions = _itemInfoDtoOptions;
 
-            if (_itemInfoDtoOptions == null)
+            if (_itemInfoDtoOptions is null)
             {
                 dtoOptions = new DtoOptions
                 {
diff --git a/Emby.Server.Implementations/Session/SessionWebSocketListener.cs b/Emby.Server.Implementations/Session/SessionWebSocketListener.cs
index c654828b1e..bab934578a 100644
--- a/Emby.Server.Implementations/Session/SessionWebSocketListener.cs
+++ b/Emby.Server.Implementations/Session/SessionWebSocketListener.cs
@@ -202,7 +202,7 @@ namespace Emby.Server.Implementations.Session
         {
             lock (_keepAliveLock)
             {
-                if (_keepAliveCancellationToken == null)
+                if (_keepAliveCancellationToken is null)
                 {
                     _keepAliveCancellationToken = new CancellationTokenSource();
                     // Start KeepAlive watcher
diff --git a/Emby.Server.Implementations/Session/WebSocketController.cs b/Emby.Server.Implementations/Session/WebSocketController.cs
index 1f3248f075..051fa5b3cf 100644
--- a/Emby.Server.Implementations/Session/WebSocketController.cs
+++ b/Emby.Server.Implementations/Session/WebSocketController.cs
@@ -73,7 +73,7 @@ namespace Emby.Server.Implementations.Session
                 .OrderByDescending(i => i.LastActivityDate)
                 .FirstOrDefault();
 
-            if (socket == null)
+            if (socket is null)
             {
                 return Task.CompletedTask;
             }
diff --git a/Emby.Server.Implementations/Sorting/AiredEpisodeOrderComparer.cs b/Emby.Server.Implementations/Sorting/AiredEpisodeOrderComparer.cs
index 2d21bd9c2a..964004eccb 100644
--- a/Emby.Server.Implementations/Sorting/AiredEpisodeOrderComparer.cs
+++ b/Emby.Server.Implementations/Sorting/AiredEpisodeOrderComparer.cs
@@ -31,9 +31,9 @@ namespace Emby.Server.Implementations.Sorting
             var episode1 = x as Episode;
             var episode2 = y as Episode;
 
-            if (episode1 == null)
+            if (episode1 is null)
             {
-                if (episode2 == null)
+                if (episode2 is null)
                 {
                     return 0;
                 }
@@ -41,7 +41,7 @@ namespace Emby.Server.Implementations.Sorting
                 return 1;
             }
 
-            if (episode2 == null)
+            if (episode2 is null)
             {
                 return -1;
             }
diff --git a/Emby.Server.Implementations/Sorting/PlayCountComparer.cs b/Emby.Server.Implementations/Sorting/PlayCountComparer.cs
index 45c9044c52..16f1b79b3e 100644
--- a/Emby.Server.Implementations/Sorting/PlayCountComparer.cs
+++ b/Emby.Server.Implementations/Sorting/PlayCountComparer.cs
@@ -57,7 +57,7 @@ namespace Emby.Server.Implementations.Sorting
         {
             var userdata = UserDataRepository.GetUserData(User, x);
 
-            return userdata == null ? 0 : userdata.PlayCount;
+            return userdata is null ? 0 : userdata.PlayCount;
         }
     }
 }
diff --git a/Emby.Server.Implementations/Sorting/PremiereDateComparer.cs b/Emby.Server.Implementations/Sorting/PremiereDateComparer.cs
index b217556ef3..db86b8002d 100644
--- a/Emby.Server.Implementations/Sorting/PremiereDateComparer.cs
+++ b/Emby.Server.Implementations/Sorting/PremiereDateComparer.cs
@@ -34,7 +34,7 @@ namespace Emby.Server.Implementations.Sorting
         /// <returns>DateTime.</returns>
         private static DateTime GetDate(BaseItem? x)
         {
-            if (x == null)
+            if (x is null)
             {
                 return DateTime.MinValue;
             }
diff --git a/Emby.Server.Implementations/Sorting/ProductionYearComparer.cs b/Emby.Server.Implementations/Sorting/ProductionYearComparer.cs
index d2022df7a6..7fd1e024d0 100644
--- a/Emby.Server.Implementations/Sorting/ProductionYearComparer.cs
+++ b/Emby.Server.Implementations/Sorting/ProductionYearComparer.cs
@@ -33,7 +33,7 @@ namespace Emby.Server.Implementations.Sorting
         /// <returns>DateTime.</returns>
         private static int GetValue(BaseItem? x)
         {
-            if (x == null)
+            if (x is null)
             {
                 return 0;
             }
diff --git a/Emby.Server.Implementations/SyncPlay/Group.cs b/Emby.Server.Implementations/SyncPlay/Group.cs
index 52becfec6b..ef2a4ef77e 100644
--- a/Emby.Server.Implementations/SyncPlay/Group.cs
+++ b/Emby.Server.Implementations/SyncPlay/Group.cs
@@ -197,7 +197,7 @@ namespace Emby.Server.Implementations.SyncPlay
         private bool HasAccessToQueue(User user, IReadOnlyList<Guid> queue)
         {
             // Check if queue is empty.
-            if (queue == null || queue.Count == 0)
+            if (queue is null || queue.Count == 0)
             {
                 return true;
             }
@@ -217,7 +217,7 @@ namespace Emby.Server.Implementations.SyncPlay
         private bool AllUsersHaveAccessToQueue(IReadOnlyList<Guid> queue)
         {
             // Check if queue is empty.
-            if (queue == null || queue.Count == 0)
+            if (queue is null || queue.Count == 0)
             {
                 return true;
             }
diff --git a/Emby.Server.Implementations/SyncPlay/SyncPlayManager.cs b/Emby.Server.Implementations/SyncPlay/SyncPlayManager.cs
index 53e3b3577f..63c4a15564 100644
--- a/Emby.Server.Implementations/SyncPlay/SyncPlayManager.cs
+++ b/Emby.Server.Implementations/SyncPlay/SyncPlayManager.cs
@@ -102,12 +102,12 @@ namespace Emby.Server.Implementations.SyncPlay
         /// <inheritdoc />
         public void NewGroup(SessionInfo session, NewGroupRequest request, CancellationToken cancellationToken)
         {
-            if (session == null)
+            if (session is null)
             {
                 throw new InvalidOperationException("Session is null!");
             }
 
-            if (request == null)
+            if (request is null)
             {
                 throw new InvalidOperationException("Request is null!");
             }
@@ -138,12 +138,12 @@ namespace Emby.Server.Implementations.SyncPlay
         /// <inheritdoc />
         public void JoinGroup(SessionInfo session, JoinGroupRequest request, CancellationToken cancellationToken)
         {
-            if (session == null)
+            if (session is null)
             {
                 throw new InvalidOperationException("Session is null!");
             }
 
-            if (request == null)
+            if (request is null)
             {
                 throw new InvalidOperationException("Request is null!");
             }
@@ -155,7 +155,7 @@ namespace Emby.Server.Implementations.SyncPlay
             {
                 _groups.TryGetValue(request.GroupId, out Group group);
 
-                if (group == null)
+                if (group is null)
                 {
                     _logger.LogWarning("Session {SessionId} tried to join group {GroupId} that does not exist.", session.Id, request.GroupId);
 
@@ -204,12 +204,12 @@ namespace Emby.Server.Implementations.SyncPlay
         /// <inheritdoc />
         public void LeaveGroup(SessionInfo session, LeaveGroupRequest request, CancellationToken cancellationToken)
         {
-            if (session == null)
+            if (session is null)
             {
                 throw new InvalidOperationException("Session is null!");
             }
 
-            if (request == null)
+            if (request is null)
             {
                 throw new InvalidOperationException("Request is null!");
             }
@@ -257,12 +257,12 @@ namespace Emby.Server.Implementations.SyncPlay
         /// <inheritdoc />
         public List<GroupInfoDto> ListGroups(SessionInfo session, ListGroupsRequest request)
         {
-            if (session == null)
+            if (session is null)
             {
                 throw new InvalidOperationException("Session is null!");
             }
 
-            if (request == null)
+            if (request is null)
             {
                 throw new InvalidOperationException("Request is null!");
             }
@@ -291,12 +291,12 @@ namespace Emby.Server.Implementations.SyncPlay
         /// <inheritdoc />
         public void HandleRequest(SessionInfo session, IGroupPlaybackRequest request, CancellationToken cancellationToken)
         {
-            if (session == null)
+            if (session is null)
             {
                 throw new InvalidOperationException("Session is null!");
             }
 
-            if (request == null)
+            if (request is null)
             {
                 throw new InvalidOperationException("Request is null!");
             }
diff --git a/Emby.Server.Implementations/TV/TVSeriesManager.cs b/Emby.Server.Implementations/TV/TVSeriesManager.cs
index 5c9b9df153..57fa57c592 100644
--- a/Emby.Server.Implementations/TV/TVSeriesManager.cs
+++ b/Emby.Server.Implementations/TV/TVSeriesManager.cs
@@ -37,7 +37,7 @@ namespace Emby.Server.Implementations.TV
         {
             var user = _userManager.GetUserById(query.UserId);
 
-            if (user == null)
+            if (user is null)
             {
                 throw new ArgumentException("User not found");
             }
@@ -86,7 +86,7 @@ namespace Emby.Server.Implementations.TV
         {
             var user = _userManager.GetUserById(request.UserId);
 
-            if (user == null)
+            if (user is null)
             {
                 throw new ArgumentException("User not found");
             }
diff --git a/Emby.Server.Implementations/Updates/InstallationManager.cs b/Emby.Server.Implementations/Updates/InstallationManager.cs
index 550f0e0755..84489b6466 100644
--- a/Emby.Server.Implementations/Updates/InstallationManager.cs
+++ b/Emby.Server.Implementations/Updates/InstallationManager.cs
@@ -102,7 +102,7 @@ namespace Emby.Server.Implementations.Updates
                 PackageInfo[]? packages = await _httpClientFactory.CreateClient(NamedClient.Default)
                         .GetFromJsonAsync<PackageInfo[]>(new Uri(manifest), _jsonSerializerOptions, cancellationToken).ConfigureAwait(false);
 
-                if (packages == null)
+                if (packages is null)
                 {
                     return Array.Empty<PackageInfo>();
                 }
@@ -251,7 +251,7 @@ namespace Emby.Server.Implementations.Updates
             var package = FilterPackages(availablePackages, name, id, specificVersion).FirstOrDefault();
 
             // Package not found in repository
-            if (package == null)
+            if (package is null)
             {
                 yield break;
             }
@@ -370,7 +370,7 @@ namespace Emby.Server.Implementations.Updates
         /// <param name="plugin">The <see cref="LocalPlugin"/> to uninstall.</param>
         public void UninstallPlugin(LocalPlugin plugin)
         {
-            if (plugin == null)
+            if (plugin is null)
             {
                 return;
             }
@@ -565,7 +565,7 @@ namespace Emby.Server.Implementations.Updates
                   ?? _pluginManager.Plugins.FirstOrDefault(p => p.Name.Equals(package.Name, StringComparison.OrdinalIgnoreCase) && p.Version.Equals(package.Version));
 
             await PerformPackageInstallation(package, plugin?.Manifest.Status ?? PluginStatus.Active, cancellationToken).ConfigureAwait(false);
-            _logger.LogInformation("Plugin {Action}: {PluginName} {PluginVersion}", plugin == null ? "installed" : "updated", package.Name, package.Version);
+            _logger.LogInformation("Plugin {Action}: {PluginName} {PluginVersion}", plugin is null ? "installed" : "updated", package.Name, package.Version);
 
             return plugin != null;
         }
diff --git a/Jellyfin.Api/Auth/AnonymousLanAccessPolicy/AnonymousLanAccessHandler.cs b/Jellyfin.Api/Auth/AnonymousLanAccessPolicy/AnonymousLanAccessHandler.cs
index 88af08dd33..d4b1ffb060 100644
--- a/Jellyfin.Api/Auth/AnonymousLanAccessPolicy/AnonymousLanAccessHandler.cs
+++ b/Jellyfin.Api/Auth/AnonymousLanAccessPolicy/AnonymousLanAccessHandler.cs
@@ -32,7 +32,7 @@ namespace Jellyfin.Api.Auth.AnonymousLanAccessPolicy
             var ip = _httpContextAccessor.HttpContext?.Connection.RemoteIpAddress;
 
             // Loopback will be on LAN, so we can accept null.
-            if (ip == null || _networkManager.IsInLocalNetwork(ip))
+            if (ip is null || _networkManager.IsInLocalNetwork(ip))
             {
                 context.Succeed(requirement);
             }
diff --git a/Jellyfin.Api/Auth/BaseAuthorizationHandler.cs b/Jellyfin.Api/Auth/BaseAuthorizationHandler.cs
index 92ee1dd59a..630bb7037a 100644
--- a/Jellyfin.Api/Auth/BaseAuthorizationHandler.cs
+++ b/Jellyfin.Api/Auth/BaseAuthorizationHandler.cs
@@ -67,7 +67,7 @@ namespace Jellyfin.Api.Auth
 
             // Ensure userId links to a valid user.
             var user = _userManager.GetUserById(userId);
-            if (user == null)
+            if (user is null)
             {
                 return false;
             }
diff --git a/Jellyfin.Api/Controllers/ConfigurationController.cs b/Jellyfin.Api/Controllers/ConfigurationController.cs
index bbe1633120..a00ac1b0af 100644
--- a/Jellyfin.Api/Controllers/ConfigurationController.cs
+++ b/Jellyfin.Api/Controllers/ConfigurationController.cs
@@ -96,7 +96,7 @@ namespace Jellyfin.Api.Controllers
             var configurationType = _configurationManager.GetConfigurationType(key);
             var deserializedConfiguration = configuration.Deserialize(configurationType, _serializerOptions);
 
-            if (deserializedConfiguration == null)
+            if (deserializedConfiguration is null)
             {
                 throw new ArgumentException("Body doesn't contain a valid configuration");
             }
diff --git a/Jellyfin.Api/Controllers/DashboardController.cs b/Jellyfin.Api/Controllers/DashboardController.cs
index c8411f44ba..3894e6c5fc 100644
--- a/Jellyfin.Api/Controllers/DashboardController.cs
+++ b/Jellyfin.Api/Controllers/DashboardController.cs
@@ -76,7 +76,7 @@ namespace Jellyfin.Api.Controllers
         public ActionResult GetDashboardConfigurationPage([FromQuery] string? name)
         {
             var altPage = GetPluginPages().FirstOrDefault(p => string.Equals(p.Item1.Name, name, StringComparison.OrdinalIgnoreCase));
-            if (altPage == null)
+            if (altPage is null)
             {
                 return NotFound();
             }
@@ -84,7 +84,7 @@ namespace Jellyfin.Api.Controllers
             IPlugin plugin = altPage.Item2;
             string resourcePath = altPage.Item1.EmbeddedResourcePath;
             Stream? stream = plugin.GetType().Assembly.GetManifestResourceStream(resourcePath);
-            if (stream == null)
+            if (stream is null)
             {
                 _logger.LogError("Failed to get resource {Resource} from plugin {Plugin}", resourcePath, plugin.Name);
                 return NotFound();
diff --git a/Jellyfin.Api/Controllers/DevicesController.cs b/Jellyfin.Api/Controllers/DevicesController.cs
index 8292cf83b5..aad60cf5cc 100644
--- a/Jellyfin.Api/Controllers/DevicesController.cs
+++ b/Jellyfin.Api/Controllers/DevicesController.cs
@@ -64,7 +64,7 @@ namespace Jellyfin.Api.Controllers
         public async Task<ActionResult<DeviceInfo>> GetDeviceInfo([FromQuery, Required] string id)
         {
             var deviceInfo = await _deviceManager.GetDevice(id).ConfigureAwait(false);
-            if (deviceInfo == null)
+            if (deviceInfo is null)
             {
                 return NotFound();
             }
@@ -85,7 +85,7 @@ namespace Jellyfin.Api.Controllers
         public async Task<ActionResult<DeviceOptions>> GetDeviceOptions([FromQuery, Required] string id)
         {
             var deviceInfo = await _deviceManager.GetDeviceOptions(id).ConfigureAwait(false);
-            if (deviceInfo == null)
+            if (deviceInfo is null)
             {
                 return NotFound();
             }
@@ -123,7 +123,7 @@ namespace Jellyfin.Api.Controllers
         public async Task<ActionResult> DeleteDevice([FromQuery, Required] string id)
         {
             var existingDevice = await _deviceManager.GetDevice(id).ConfigureAwait(false);
-            if (existingDevice == null)
+            if (existingDevice is null)
             {
                 return NotFound();
             }
diff --git a/Jellyfin.Api/Controllers/DlnaController.cs b/Jellyfin.Api/Controllers/DlnaController.cs
index 35c3a3d922..07e0590a10 100644
--- a/Jellyfin.Api/Controllers/DlnaController.cs
+++ b/Jellyfin.Api/Controllers/DlnaController.cs
@@ -63,7 +63,7 @@ namespace Jellyfin.Api.Controllers
         public ActionResult<DeviceProfile> GetProfile([FromRoute, Required] string profileId)
         {
             var profile = _dlnaManager.GetProfile(profileId);
-            if (profile == null)
+            if (profile is null)
             {
                 return NotFound();
             }
@@ -84,7 +84,7 @@ namespace Jellyfin.Api.Controllers
         public ActionResult DeleteProfile([FromRoute, Required] string profileId)
         {
             var existingDeviceProfile = _dlnaManager.GetProfile(profileId);
-            if (existingDeviceProfile == null)
+            if (existingDeviceProfile is null)
             {
                 return NotFound();
             }
@@ -121,7 +121,7 @@ namespace Jellyfin.Api.Controllers
         public ActionResult UpdateProfile([FromRoute, Required] string profileId, [FromBody] DeviceProfile deviceProfile)
         {
             var existingDeviceProfile = _dlnaManager.GetProfile(profileId);
-            if (existingDeviceProfile == null)
+            if (existingDeviceProfile is null)
             {
                 return NotFound();
             }
diff --git a/Jellyfin.Api/Controllers/DlnaServerController.cs b/Jellyfin.Api/Controllers/DlnaServerController.cs
index 8859d60207..96c492b3ec 100644
--- a/Jellyfin.Api/Controllers/DlnaServerController.cs
+++ b/Jellyfin.Api/Controllers/DlnaServerController.cs
@@ -274,7 +274,7 @@ namespace Jellyfin.Api.Controllers
         private ActionResult GetIconInternal(string fileName)
         {
             var icon = _dlnaManager.GetIcon(fileName);
-            if (icon == null)
+            if (icon is null)
             {
                 return NotFound();
             }
diff --git a/Jellyfin.Api/Controllers/DynamicHlsController.cs b/Jellyfin.Api/Controllers/DynamicHlsController.cs
index 0f4d3c1ebc..afe0de6302 100644
--- a/Jellyfin.Api/Controllers/DynamicHlsController.cs
+++ b/Jellyfin.Api/Controllers/DynamicHlsController.cs
@@ -1482,7 +1482,7 @@ namespace Jellyfin.Api.Controllers
                         startTranscoding = true;
                         segmentId = 0;
                     }
-                    else if (currentTranscodingIndex == null)
+                    else if (currentTranscodingIndex is null)
                     {
                         _logger.LogDebug("Starting transcoding because currentTranscodingIndex=null");
                         startTranscoding = true;
@@ -1665,7 +1665,7 @@ namespace Jellyfin.Api.Controllers
         /// <returns>The command line arguments for audio transcoding.</returns>
         private string GetAudioArguments(StreamState state)
         {
-            if (state.AudioStream == null)
+            if (state.AudioStream is null)
             {
                 return string.Empty;
             }
@@ -1762,7 +1762,7 @@ namespace Jellyfin.Api.Controllers
         /// <returns>The command line arguments for video transcoding.</returns>
         private string GetVideoArguments(StreamState state, int startNumber, bool isEventPlaylist)
         {
-            if (state.VideoStream == null)
+            if (state.VideoStream is null)
             {
                 return string.Empty;
             }
@@ -1969,14 +1969,14 @@ namespace Jellyfin.Api.Controllers
         {
             var job = _transcodingJobHelper.GetTranscodingJob(playlist, TranscodingJobType);
 
-            if (job == null || job.HasExited)
+            if (job is null || job.HasExited)
             {
                 return null;
             }
 
             var file = GetLastTranscodingFile(playlist, segmentExtension, _fileSystem);
 
-            if (file == null)
+            if (file is null)
             {
                 return null;
             }
diff --git a/Jellyfin.Api/Controllers/EnvironmentController.cs b/Jellyfin.Api/Controllers/EnvironmentController.cs
index b0b4b5af51..6c78a79875 100644
--- a/Jellyfin.Api/Controllers/EnvironmentController.cs
+++ b/Jellyfin.Api/Controllers/EnvironmentController.cs
@@ -104,7 +104,7 @@ namespace Jellyfin.Api.Controllers
 
                 if (validatePathDto.ValidateWritable)
                 {
-                    if (validatePathDto.Path == null)
+                    if (validatePathDto.Path is null)
                     {
                         throw new ResourceNotFoundException(nameof(validatePathDto.Path));
                     }
diff --git a/Jellyfin.Api/Controllers/FilterController.cs b/Jellyfin.Api/Controllers/FilterController.cs
index 11808b1b82..b6780ee200 100644
--- a/Jellyfin.Api/Controllers/FilterController.cs
+++ b/Jellyfin.Api/Controllers/FilterController.cs
@@ -182,7 +182,7 @@ namespace Jellyfin.Api.Controllers
 
             if ((recursive ?? true) || parentItem is UserView || parentItem is ICollectionFolder)
             {
-                genreQuery.AncestorIds = parentItem == null ? Array.Empty<Guid>() : new[] { parentItem.Id };
+                genreQuery.AncestorIds = parentItem is null ? Array.Empty<Guid>() : new[] { parentItem.Id };
             }
             else
             {
diff --git a/Jellyfin.Api/Controllers/HlsSegmentController.cs b/Jellyfin.Api/Controllers/HlsSegmentController.cs
index 78634f0bfc..8e78d5a1af 100644
--- a/Jellyfin.Api/Controllers/HlsSegmentController.cs
+++ b/Jellyfin.Api/Controllers/HlsSegmentController.cs
@@ -167,7 +167,7 @@ namespace Jellyfin.Api.Controllers
                 }
             }
 
-            return playlistPath == null
+            return playlistPath is null
                 ? NotFound("Hls segment not found.")
                 : GetFileResult(file, playlistPath);
         }
diff --git a/Jellyfin.Api/Controllers/ImageByNameController.cs b/Jellyfin.Api/Controllers/ImageByNameController.cs
index 89bbf22c96..c54851b96e 100644
--- a/Jellyfin.Api/Controllers/ImageByNameController.cs
+++ b/Jellyfin.Api/Controllers/ImageByNameController.cs
@@ -77,7 +77,7 @@ namespace Jellyfin.Api.Controllers
                 .Select(i => Path.GetFullPath(Path.Combine(_applicationPaths.GeneralPath, name, filename + i)))
                 .FirstOrDefault(System.IO.File.Exists);
 
-            if (path == null)
+            if (path is null)
             {
                 return NotFound();
             }
diff --git a/Jellyfin.Api/Controllers/ImageController.cs b/Jellyfin.Api/Controllers/ImageController.cs
index f092bd8820..adcac8e974 100644
--- a/Jellyfin.Api/Controllers/ImageController.cs
+++ b/Jellyfin.Api/Controllers/ImageController.cs
@@ -198,7 +198,7 @@ namespace Jellyfin.Api.Controllers
             }
 
             var user = _userManager.GetUserById(userId);
-            if (user?.ProfileImage == null)
+            if (user?.ProfileImage is null)
             {
                 return NoContent();
             }
@@ -242,7 +242,7 @@ namespace Jellyfin.Api.Controllers
             }
 
             var user = _userManager.GetUserById(userId);
-            if (user?.ProfileImage == null)
+            if (user?.ProfileImage is null)
             {
                 return NoContent();
             }
@@ -279,7 +279,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] int? imageIndex)
         {
             var item = _libraryManager.GetItemById(itemId);
-            if (item == null)
+            if (item is null)
             {
                 return NotFound();
             }
@@ -307,7 +307,7 @@ namespace Jellyfin.Api.Controllers
             [FromRoute] int imageIndex)
         {
             var item = _libraryManager.GetItemById(itemId);
-            if (item == null)
+            if (item is null)
             {
                 return NotFound();
             }
@@ -335,7 +335,7 @@ namespace Jellyfin.Api.Controllers
             [FromRoute, Required] ImageType imageType)
         {
             var item = _libraryManager.GetItemById(itemId);
-            if (item == null)
+            if (item is null)
             {
                 return NotFound();
             }
@@ -371,7 +371,7 @@ namespace Jellyfin.Api.Controllers
             [FromRoute] int imageIndex)
         {
             var item = _libraryManager.GetItemById(itemId);
-            if (item == null)
+            if (item is null)
             {
                 return NotFound();
             }
@@ -407,7 +407,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery, Required] int newIndex)
         {
             var item = _libraryManager.GetItemById(itemId);
-            if (item == null)
+            if (item is null)
             {
                 return NotFound();
             }
@@ -430,7 +430,7 @@ namespace Jellyfin.Api.Controllers
         public async Task<ActionResult<IEnumerable<ImageInfo>>> GetItemImageInfos([FromRoute, Required] Guid itemId)
         {
             var item = _libraryManager.GetItemById(itemId);
-            if (item == null)
+            if (item is null)
             {
                 return NotFound();
             }
@@ -537,7 +537,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] int? imageIndex)
         {
             var item = _libraryManager.GetItemById(itemId);
-            if (item == null)
+            if (item is null)
             {
                 return NotFound();
             }
@@ -620,7 +620,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] string? foregroundLayer)
         {
             var item = _libraryManager.GetItemById(itemId);
-            if (item == null)
+            if (item is null)
             {
                 return NotFound();
             }
@@ -703,7 +703,7 @@ namespace Jellyfin.Api.Controllers
             [FromRoute, Required] int imageIndex)
         {
             var item = _libraryManager.GetItemById(itemId);
-            if (item == null)
+            if (item is null)
             {
                 return NotFound();
             }
@@ -786,7 +786,7 @@ namespace Jellyfin.Api.Controllers
             [FromRoute, Required] int imageIndex)
         {
             var item = _libraryManager.GetArtist(name);
-            if (item == null)
+            if (item is null)
             {
                 return NotFound();
             }
@@ -869,7 +869,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] int? imageIndex)
         {
             var item = _libraryManager.GetGenre(name);
-            if (item == null)
+            if (item is null)
             {
                 return NotFound();
             }
@@ -952,7 +952,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] string? foregroundLayer)
         {
             var item = _libraryManager.GetGenre(name);
-            if (item == null)
+            if (item is null)
             {
                 return NotFound();
             }
@@ -1035,7 +1035,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] int? imageIndex)
         {
             var item = _libraryManager.GetMusicGenre(name);
-            if (item == null)
+            if (item is null)
             {
                 return NotFound();
             }
@@ -1118,7 +1118,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] string? foregroundLayer)
         {
             var item = _libraryManager.GetMusicGenre(name);
-            if (item == null)
+            if (item is null)
             {
                 return NotFound();
             }
@@ -1201,7 +1201,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] int? imageIndex)
         {
             var item = _libraryManager.GetPerson(name);
-            if (item == null)
+            if (item is null)
             {
                 return NotFound();
             }
@@ -1284,7 +1284,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] string? foregroundLayer)
         {
             var item = _libraryManager.GetPerson(name);
-            if (item == null)
+            if (item is null)
             {
                 return NotFound();
             }
@@ -1367,7 +1367,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] int? imageIndex)
         {
             var item = _libraryManager.GetStudio(name);
-            if (item == null)
+            if (item is null)
             {
                 return NotFound();
             }
@@ -1450,7 +1450,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] string? foregroundLayer)
         {
             var item = _libraryManager.GetStudio(name);
-            if (item == null)
+            if (item is null)
             {
                 return NotFound();
             }
@@ -1533,7 +1533,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] int? imageIndex)
         {
             var user = _userManager.GetUserById(userId);
-            if (user?.ProfileImage == null)
+            if (user?.ProfileImage is null)
             {
                 return NotFound();
             }
@@ -1634,7 +1634,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] string? foregroundLayer)
         {
             var user = _userManager.GetUserById(userId);
-            if (user?.ProfileImage == null)
+            if (user?.ProfileImage is null)
             {
                 return NotFound();
             }
@@ -1944,10 +1944,10 @@ namespace Jellyfin.Api.Controllers
                 unplayedCount = null;
             }
 
-            if (imageInfo == null)
+            if (imageInfo is null)
             {
                 imageInfo = item?.GetImageInfo(imageType, imageIndex ?? 0);
-                if (imageInfo == null)
+                if (imageInfo is null)
                 {
                     return NotFound(string.Format(NumberFormatInfo.InvariantInfo, "{0} does not have an image of type {1}", item?.Name, imageType));
                 }
diff --git a/Jellyfin.Api/Controllers/ItemLookupController.cs b/Jellyfin.Api/Controllers/ItemLookupController.cs
index c49f856169..34893d682d 100644
--- a/Jellyfin.Api/Controllers/ItemLookupController.cs
+++ b/Jellyfin.Api/Controllers/ItemLookupController.cs
@@ -65,7 +65,7 @@ namespace Jellyfin.Api.Controllers
         public ActionResult<IEnumerable<ExternalIdInfo>> GetExternalIdInfos([FromRoute, Required] Guid itemId)
         {
             var item = _libraryManager.GetItemById(itemId);
-            if (item == null)
+            if (item is null)
             {
                 return NotFound();
             }
diff --git a/Jellyfin.Api/Controllers/ItemRefreshController.cs b/Jellyfin.Api/Controllers/ItemRefreshController.cs
index 9340737b50..0dc3fbd05a 100644
--- a/Jellyfin.Api/Controllers/ItemRefreshController.cs
+++ b/Jellyfin.Api/Controllers/ItemRefreshController.cs
@@ -61,7 +61,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] bool replaceAllImages = false)
         {
             var item = _libraryManager.GetItemById(itemId);
-            if (item == null)
+            if (item is null)
             {
                 return NotFound();
             }
diff --git a/Jellyfin.Api/Controllers/ItemUpdateController.cs b/Jellyfin.Api/Controllers/ItemUpdateController.cs
index fd137f98f1..5f992f0335 100644
--- a/Jellyfin.Api/Controllers/ItemUpdateController.cs
+++ b/Jellyfin.Api/Controllers/ItemUpdateController.cs
@@ -71,7 +71,7 @@ namespace Jellyfin.Api.Controllers
         public async Task<ActionResult> UpdateItem([FromRoute, Required] Guid itemId, [FromBody, Required] BaseItemDto request)
         {
             var item = _libraryManager.GetItemById(itemId);
-            if (item == null)
+            if (item is null)
             {
                 return NotFound();
             }
@@ -198,7 +198,7 @@ namespace Jellyfin.Api.Controllers
         public ActionResult UpdateItemContentType([FromRoute, Required] Guid itemId, [FromQuery] string? contentType)
         {
             var item = _libraryManager.GetItemById(itemId);
-            if (item == null)
+            if (item is null)
             {
                 return NotFound();
             }
diff --git a/Jellyfin.Api/Controllers/LibraryController.cs b/Jellyfin.Api/Controllers/LibraryController.cs
index 7d5cfc7ae5..80d1c008b5 100644
--- a/Jellyfin.Api/Controllers/LibraryController.cs
+++ b/Jellyfin.Api/Controllers/LibraryController.cs
@@ -104,7 +104,7 @@ namespace Jellyfin.Api.Controllers
         public ActionResult GetFile([FromRoute, Required] Guid itemId)
         {
             var item = _libraryManager.GetItemById(itemId);
-            if (item == null)
+            if (item is null)
             {
                 return NotFound();
             }
@@ -154,7 +154,7 @@ namespace Jellyfin.Api.Controllers
                     : _libraryManager.GetUserRootFolder())
                 : _libraryManager.GetItemById(itemId);
 
-            if (item == null)
+            if (item is null)
             {
                 return NotFound("Item not found.");
             }
@@ -171,7 +171,7 @@ namespace Jellyfin.Api.Controllers
                 }
 
                 var parent = item.GetParent();
-                if (parent == null)
+                if (parent is null)
                 {
                     break;
                 }
@@ -220,7 +220,7 @@ namespace Jellyfin.Api.Controllers
                     : _libraryManager.GetUserRootFolder())
                 : _libraryManager.GetItemById(itemId);
 
-            if (item == null)
+            if (item is null)
             {
                 return NotFound("Item not found.");
             }
@@ -237,7 +237,7 @@ namespace Jellyfin.Api.Controllers
                 }
 
                 var parent = item.GetParent();
-                if (parent == null)
+                if (parent is null)
                 {
                     break;
                 }
@@ -435,7 +435,7 @@ namespace Jellyfin.Api.Controllers
         {
             var item = _libraryManager.GetItemById(itemId);
 
-            if (item == null)
+            if (item is null)
             {
                 return NotFound("Item not found");
             }
@@ -610,7 +610,7 @@ namespace Jellyfin.Api.Controllers
         public async Task<ActionResult> GetDownload([FromRoute, Required] Guid itemId)
         {
             var item = _libraryManager.GetItemById(itemId);
-            if (item == null)
+            if (item is null)
             {
                 return NotFound();
             }
diff --git a/Jellyfin.Api/Controllers/LiveTvController.cs b/Jellyfin.Api/Controllers/LiveTvController.cs
index 394df0f58b..94710d78f2 100644
--- a/Jellyfin.Api/Controllers/LiveTvController.cs
+++ b/Jellyfin.Api/Controllers/LiveTvController.cs
@@ -763,7 +763,7 @@ namespace Jellyfin.Api.Controllers
             await AssertUserCanManageLiveTv().ConfigureAwait(false);
 
             var item = _libraryManager.GetItemById(recordingId);
-            if (item == null)
+            if (item is null)
             {
                 return NotFound();
             }
@@ -840,7 +840,7 @@ namespace Jellyfin.Api.Controllers
         public async Task<ActionResult<SeriesTimerInfoDto>> GetSeriesTimer([FromRoute, Required] string timerId)
         {
             var timer = await _liveTvManager.GetSeriesTimer(timerId, CancellationToken.None).ConfigureAwait(false);
-            if (timer == null)
+            if (timer is null)
             {
                 return NotFound();
             }
@@ -1201,7 +1201,7 @@ namespace Jellyfin.Api.Controllers
         public ActionResult GetLiveStreamFile([FromRoute, Required] string streamId, [FromRoute, Required] string container)
         {
             var liveStreamInfo = _mediaSourceManager.GetLiveStreamInfoByUniqueId(streamId);
-            if (liveStreamInfo == null)
+            if (liveStreamInfo is null)
             {
                 return NotFound();
             }
diff --git a/Jellyfin.Api/Controllers/MediaInfoController.cs b/Jellyfin.Api/Controllers/MediaInfoController.cs
index c111e92186..be6453af95 100644
--- a/Jellyfin.Api/Controllers/MediaInfoController.cs
+++ b/Jellyfin.Api/Controllers/MediaInfoController.cs
@@ -121,7 +121,7 @@ namespace Jellyfin.Api.Controllers
             var profile = playbackInfoDto?.DeviceProfile;
             _logger.LogDebug("GetPostedPlaybackInfo profile: {@Profile}", profile);
 
-            if (profile == null)
+            if (profile is null)
             {
                 var caps = _deviceManager.GetCapabilities(User.GetDeviceId());
                 if (caps != null)
diff --git a/Jellyfin.Api/Controllers/PackageController.cs b/Jellyfin.Api/Controllers/PackageController.cs
index 9690aead0c..0aa7c2ac9e 100644
--- a/Jellyfin.Api/Controllers/PackageController.cs
+++ b/Jellyfin.Api/Controllers/PackageController.cs
@@ -54,7 +54,7 @@ namespace Jellyfin.Api.Controllers
                     assemblyGuid ?? default)
                 .FirstOrDefault();
 
-            if (result == null)
+            if (result is null)
             {
                 return NotFound();
             }
@@ -110,7 +110,7 @@ namespace Jellyfin.Api.Controllers
                     specificVersion: string.IsNullOrEmpty(version) ? null : Version.Parse(version))
                 .FirstOrDefault();
 
-            if (package == null)
+            if (package is null)
             {
                 return NotFound();
             }
diff --git a/Jellyfin.Api/Controllers/PersonsController.cs b/Jellyfin.Api/Controllers/PersonsController.cs
index 42be969b29..09f7281ecb 100644
--- a/Jellyfin.Api/Controllers/PersonsController.cs
+++ b/Jellyfin.Api/Controllers/PersonsController.cs
@@ -122,7 +122,7 @@ namespace Jellyfin.Api.Controllers
                 .AddClientFields(User);
 
             var item = _libraryManager.GetPerson(name);
-            if (item == null)
+            if (item is null)
             {
                 return NotFound();
             }
diff --git a/Jellyfin.Api/Controllers/PlaylistsController.cs b/Jellyfin.Api/Controllers/PlaylistsController.cs
index fb045f891e..e0c565da18 100644
--- a/Jellyfin.Api/Controllers/PlaylistsController.cs
+++ b/Jellyfin.Api/Controllers/PlaylistsController.cs
@@ -176,7 +176,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ImageType[] enableImageTypes)
         {
             var playlist = (Playlist)_libraryManager.GetItemById(playlistId);
-            if (playlist == null)
+            if (playlist is null)
             {
                 return NotFound();
             }
diff --git a/Jellyfin.Api/Controllers/PlaystateController.cs b/Jellyfin.Api/Controllers/PlaystateController.cs
index 3a2ba033ea..58f9b7d356 100644
--- a/Jellyfin.Api/Controllers/PlaystateController.cs
+++ b/Jellyfin.Api/Controllers/PlaystateController.cs
@@ -353,7 +353,7 @@ namespace Jellyfin.Api.Controllers
             if (method == PlayMethod.Transcode)
             {
                 var job = string.IsNullOrWhiteSpace(playSessionId) ? null : _transcodingJobHelper.GetTranscodingJob(playSessionId);
-                if (job == null)
+                if (job is null)
                 {
                     return PlayMethod.DirectPlay;
                 }
diff --git a/Jellyfin.Api/Controllers/PluginsController.cs b/Jellyfin.Api/Controllers/PluginsController.cs
index b227dba2df..361828fbd7 100644
--- a/Jellyfin.Api/Controllers/PluginsController.cs
+++ b/Jellyfin.Api/Controllers/PluginsController.cs
@@ -71,7 +71,7 @@ namespace Jellyfin.Api.Controllers
         public ActionResult EnablePlugin([FromRoute, Required] Guid pluginId, [FromRoute, Required] Version version)
         {
             var plugin = _pluginManager.GetPlugin(pluginId, version);
-            if (plugin == null)
+            if (plugin is null)
             {
                 return NotFound();
             }
@@ -95,7 +95,7 @@ namespace Jellyfin.Api.Controllers
         public ActionResult DisablePlugin([FromRoute, Required] Guid pluginId, [FromRoute, Required] Version version)
         {
             var plugin = _pluginManager.GetPlugin(pluginId, version);
-            if (plugin == null)
+            if (plugin is null)
             {
                 return NotFound();
             }
@@ -119,7 +119,7 @@ namespace Jellyfin.Api.Controllers
         public ActionResult UninstallPluginByVersion([FromRoute, Required] Guid pluginId, [FromRoute, Required] Version version)
         {
             var plugin = _pluginManager.GetPlugin(pluginId, version);
-            if (plugin == null)
+            if (plugin is null)
             {
                 return NotFound();
             }
@@ -146,7 +146,7 @@ namespace Jellyfin.Api.Controllers
             var plugins = _pluginManager.Plugins.Where(p => p.Id.Equals(pluginId));
 
             // Select the un-instanced one first.
-            var plugin = plugins.FirstOrDefault(p => p.Instance == null) ?? plugins.OrderBy(p => p.Manifest.Status).FirstOrDefault();
+            var plugin = plugins.FirstOrDefault(p => p.Instance is null) ?? plugins.OrderBy(p => p.Manifest.Status).FirstOrDefault();
 
             if (plugin != null)
             {
@@ -225,13 +225,13 @@ namespace Jellyfin.Api.Controllers
         public ActionResult GetPluginImage([FromRoute, Required] Guid pluginId, [FromRoute, Required] Version version)
         {
             var plugin = _pluginManager.GetPlugin(pluginId, version);
-            if (plugin == null)
+            if (plugin is null)
             {
                 return NotFound();
             }
 
             var imagePath = Path.Combine(plugin.Path, plugin.Manifest.ImagePath ?? string.Empty);
-            if (plugin.Manifest.ImagePath == null || !System.IO.File.Exists(imagePath))
+            if (plugin.Manifest.ImagePath is null || !System.IO.File.Exists(imagePath))
             {
                 return NotFound();
             }
diff --git a/Jellyfin.Api/Controllers/RemoteImageController.cs b/Jellyfin.Api/Controllers/RemoteImageController.cs
index dbee56e140..da9e8cf90d 100644
--- a/Jellyfin.Api/Controllers/RemoteImageController.cs
+++ b/Jellyfin.Api/Controllers/RemoteImageController.cs
@@ -68,7 +68,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] bool includeAllLanguages = false)
         {
             var item = _libraryManager.GetItemById(itemId);
-            if (item == null)
+            if (item is null)
             {
                 return NotFound();
             }
@@ -127,7 +127,7 @@ namespace Jellyfin.Api.Controllers
         public ActionResult<IEnumerable<ImageProviderInfo>> GetRemoteImageProviders([FromRoute, Required] Guid itemId)
         {
             var item = _libraryManager.GetItemById(itemId);
-            if (item == null)
+            if (item is null)
             {
                 return NotFound();
             }
@@ -154,7 +154,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] string? imageUrl)
         {
             var item = _libraryManager.GetItemById(itemId);
-            if (item == null)
+            if (item is null)
             {
                 return NotFound();
             }
diff --git a/Jellyfin.Api/Controllers/ScheduledTasksController.cs b/Jellyfin.Api/Controllers/ScheduledTasksController.cs
index 68e4f0586f..832e145050 100644
--- a/Jellyfin.Api/Controllers/ScheduledTasksController.cs
+++ b/Jellyfin.Api/Controllers/ScheduledTasksController.cs
@@ -76,7 +76,7 @@ namespace Jellyfin.Api.Controllers
             var task = _taskManager.ScheduledTasks.FirstOrDefault(i =>
                 string.Equals(i.Id, taskId, StringComparison.OrdinalIgnoreCase));
 
-            if (task == null)
+            if (task is null)
             {
                 return NotFound();
             }
@@ -99,7 +99,7 @@ namespace Jellyfin.Api.Controllers
             var task = _taskManager.ScheduledTasks.FirstOrDefault(o =>
                 o.Id.Equals(taskId, StringComparison.OrdinalIgnoreCase));
 
-            if (task == null)
+            if (task is null)
             {
                 return NotFound();
             }
@@ -123,7 +123,7 @@ namespace Jellyfin.Api.Controllers
             var task = _taskManager.ScheduledTasks.FirstOrDefault(o =>
                 o.Id.Equals(taskId, StringComparison.OrdinalIgnoreCase));
 
-            if (task == null)
+            if (task is null)
             {
                 return NotFound();
             }
@@ -149,7 +149,7 @@ namespace Jellyfin.Api.Controllers
         {
             var task = _taskManager.ScheduledTasks.FirstOrDefault(o =>
                 o.Id.Equals(taskId, StringComparison.OrdinalIgnoreCase));
-            if (task == null)
+            if (task is null)
             {
                 return NotFound();
             }
diff --git a/Jellyfin.Api/Controllers/SearchController.cs b/Jellyfin.Api/Controllers/SearchController.cs
index aeed0c0d61..3c0603a19a 100644
--- a/Jellyfin.Api/Controllers/SearchController.cs
+++ b/Jellyfin.Api/Controllers/SearchController.cs
@@ -221,7 +221,7 @@ namespace Jellyfin.Api.Controllers
         {
             var itemWithImage = item.HasImage(ImageType.Thumb) ? item : null;
 
-            if (itemWithImage == null && item is Episode)
+            if (itemWithImage is null && item is Episode)
             {
                 itemWithImage = GetParentWithImage<Series>(item, ImageType.Thumb);
             }
diff --git a/Jellyfin.Api/Controllers/SessionController.cs b/Jellyfin.Api/Controllers/SessionController.cs
index 31b95162d4..9218c3b5cf 100644
--- a/Jellyfin.Api/Controllers/SessionController.cs
+++ b/Jellyfin.Api/Controllers/SessionController.cs
@@ -294,7 +294,7 @@ namespace Jellyfin.Api.Controllers
         {
             var currentSession = await RequestHelpers.GetSession(_sessionManager, _userManager, HttpContext).ConfigureAwait(false);
 
-            if (command == null)
+            if (command is null)
             {
                 throw new ArgumentException("Request body may not be null");
             }
diff --git a/Jellyfin.Api/Controllers/SubtitleController.cs b/Jellyfin.Api/Controllers/SubtitleController.cs
index 1258a9876b..b9c2a8ad8e 100644
--- a/Jellyfin.Api/Controllers/SubtitleController.cs
+++ b/Jellyfin.Api/Controllers/SubtitleController.cs
@@ -96,7 +96,7 @@ namespace Jellyfin.Api.Controllers
         {
             var item = _libraryManager.GetItemById(itemId);
 
-            if (item == null)
+            if (item is null)
             {
                 return NotFound();
             }
diff --git a/Jellyfin.Api/Controllers/TvShowsController.cs b/Jellyfin.Api/Controllers/TvShowsController.cs
index ea13ceb91c..7f4f4d0776 100644
--- a/Jellyfin.Api/Controllers/TvShowsController.cs
+++ b/Jellyfin.Api/Controllers/TvShowsController.cs
@@ -247,7 +247,7 @@ namespace Jellyfin.Api.Controllers
                     .GetSeasons(user, dtoOptions)
                     .FirstOrDefault(i => i.IndexNumber == season.Value);
 
-                episodes = seasonItem == null ?
+                episodes = seasonItem is null ?
                     new List<BaseItem>()
                     : ((Season)seasonItem).GetEpisodes(user, dtoOptions);
             }
diff --git a/Jellyfin.Api/Controllers/UserController.cs b/Jellyfin.Api/Controllers/UserController.cs
index ff653fe6bb..4ee3361b5b 100644
--- a/Jellyfin.Api/Controllers/UserController.cs
+++ b/Jellyfin.Api/Controllers/UserController.cs
@@ -124,7 +124,7 @@ namespace Jellyfin.Api.Controllers
         {
             var user = _userManager.GetUserById(userId);
 
-            if (user == null)
+            if (user is null)
             {
                 return NotFound("User not found");
             }
@@ -173,7 +173,7 @@ namespace Jellyfin.Api.Controllers
         {
             var user = _userManager.GetUserById(userId);
 
-            if (user == null)
+            if (user is null)
             {
                 return NotFound("User not found");
             }
@@ -272,7 +272,7 @@ namespace Jellyfin.Api.Controllers
 
             var user = _userManager.GetUserById(userId);
 
-            if (user == null)
+            if (user is null)
             {
                 return NotFound("User not found");
             }
@@ -292,7 +292,7 @@ namespace Jellyfin.Api.Controllers
                         HttpContext.GetNormalizedRemoteIp().ToString(),
                         false).ConfigureAwait(false);
 
-                    if (success == null)
+                    if (success is null)
                     {
                         return StatusCode(StatusCodes.Status403Forbidden, "Invalid user or password entered.");
                     }
@@ -333,7 +333,7 @@ namespace Jellyfin.Api.Controllers
 
             var user = _userManager.GetUserById(userId);
 
-            if (user == null)
+            if (user is null)
             {
                 return NotFound("User not found");
             }
@@ -544,7 +544,7 @@ namespace Jellyfin.Api.Controllers
             }
 
             var user = _userManager.GetUserById(userId);
-            if (user == null)
+            if (user is null)
             {
                 return BadRequest();
             }
diff --git a/Jellyfin.Api/Controllers/UserLibraryController.cs b/Jellyfin.Api/Controllers/UserLibraryController.cs
index 8a2d5a27d9..60e1906164 100644
--- a/Jellyfin.Api/Controllers/UserLibraryController.cs
+++ b/Jellyfin.Api/Controllers/UserLibraryController.cs
@@ -402,7 +402,7 @@ namespace Jellyfin.Api.Controllers
         {
             var user = _userManager.GetUserById(userId);
 
-            if (user == null)
+            if (user is null)
             {
                 return NotFound();
             }
@@ -411,7 +411,7 @@ namespace Jellyfin.Api.Controllers
                 ? _libraryManager.GetUserRootFolder()
                 : _libraryManager.GetItemById(itemId);
 
-            if (item == null)
+            if (item is null)
             {
                 return NotFound();
             }
diff --git a/Jellyfin.Api/Controllers/UserViewsController.cs b/Jellyfin.Api/Controllers/UserViewsController.cs
index 85d154cac2..3aeb444dfa 100644
--- a/Jellyfin.Api/Controllers/UserViewsController.cs
+++ b/Jellyfin.Api/Controllers/UserViewsController.cs
@@ -117,7 +117,7 @@ namespace Jellyfin.Api.Controllers
         public ActionResult<IEnumerable<SpecialViewOptionDto>> GetGroupingOptions([FromRoute, Required] Guid userId)
         {
             var user = _userManager.GetUserById(userId);
-            if (user == null)
+            if (user is null)
             {
                 return NotFound();
             }
diff --git a/Jellyfin.Api/Controllers/VideoAttachmentsController.cs b/Jellyfin.Api/Controllers/VideoAttachmentsController.cs
index c2bb0dfffe..bb31626142 100644
--- a/Jellyfin.Api/Controllers/VideoAttachmentsController.cs
+++ b/Jellyfin.Api/Controllers/VideoAttachmentsController.cs
@@ -55,7 +55,7 @@ namespace Jellyfin.Api.Controllers
             try
             {
                 var item = _libraryManager.GetItemById(videoId);
-                if (item == null)
+                if (item is null)
                 {
                     return NotFound();
                 }
diff --git a/Jellyfin.Api/Controllers/VideosController.cs b/Jellyfin.Api/Controllers/VideosController.cs
index bf08ad376b..17e5567305 100644
--- a/Jellyfin.Api/Controllers/VideosController.cs
+++ b/Jellyfin.Api/Controllers/VideosController.cs
@@ -149,7 +149,7 @@ namespace Jellyfin.Api.Controllers
         {
             var video = (Video)_libraryManager.GetItemById(itemId);
 
-            if (video == null)
+            if (video is null)
             {
                 return NotFound("The video either does not exist or the id does not belong to a video.");
             }
@@ -199,7 +199,7 @@ namespace Jellyfin.Api.Controllers
             }
 
             var primaryVersion = items.FirstOrDefault(i => i.MediaSourceCount > 1 && string.IsNullOrEmpty(i.PrimaryVersionId));
-            if (primaryVersion == null)
+            if (primaryVersion is null)
             {
                 primaryVersion = items
                     .OrderBy(i =>
@@ -444,7 +444,7 @@ namespace Jellyfin.Api.Controllers
                 StreamingHelpers.AddDlnaHeaders(state, Response.Headers, true, state.Request.StartTimeTicks, Request, _dlnaManager);
 
                 var liveStreamInfo = _mediaSourceManager.GetLiveStreamInfo(streamingRequest.LiveStreamId);
-                if (liveStreamInfo == null)
+                if (liveStreamInfo is null)
                 {
                     return NotFound();
                 }
diff --git a/Jellyfin.Api/Controllers/YearsController.cs b/Jellyfin.Api/Controllers/YearsController.cs
index b732bdff3c..f8193f19a5 100644
--- a/Jellyfin.Api/Controllers/YearsController.cs
+++ b/Jellyfin.Api/Controllers/YearsController.cs
@@ -173,7 +173,7 @@ namespace Jellyfin.Api.Controllers
         public ActionResult<BaseItemDto> GetYear([FromRoute, Required] int year, [FromQuery] Guid? userId)
         {
             var item = _libraryManager.GetYear(year);
-            if (item == null)
+            if (item is null)
             {
                 return NotFound();
             }
diff --git a/Jellyfin.Api/Helpers/AudioHelper.cs b/Jellyfin.Api/Helpers/AudioHelper.cs
index bc83ff48a8..5c5a2fc348 100644
--- a/Jellyfin.Api/Helpers/AudioHelper.cs
+++ b/Jellyfin.Api/Helpers/AudioHelper.cs
@@ -85,7 +85,7 @@ namespace Jellyfin.Api.Helpers
             TranscodingJobType transcodingJobType,
             StreamingRequestDto streamingRequest)
         {
-            if (_httpContextAccessor.HttpContext == null)
+            if (_httpContextAccessor.HttpContext is null)
             {
                 throw new ResourceNotFoundException(nameof(_httpContextAccessor.HttpContext));
             }
@@ -116,7 +116,7 @@ namespace Jellyfin.Api.Helpers
                 StreamingHelpers.AddDlnaHeaders(state, _httpContextAccessor.HttpContext.Response.Headers, true, streamingRequest.StartTimeTicks, _httpContextAccessor.HttpContext.Request, _dlnaManager);
 
                 var liveStreamInfo = _mediaSourceManager.GetLiveStreamInfo(streamingRequest.LiveStreamId);
-                if (liveStreamInfo == null)
+                if (liveStreamInfo is null)
                 {
                     throw new FileNotFoundException();
                 }
diff --git a/Jellyfin.Api/Helpers/DynamicHlsHelper.cs b/Jellyfin.Api/Helpers/DynamicHlsHelper.cs
index ee672cab4e..904021a86c 100644
--- a/Jellyfin.Api/Helpers/DynamicHlsHelper.cs
+++ b/Jellyfin.Api/Helpers/DynamicHlsHelper.cs
@@ -117,7 +117,7 @@ namespace Jellyfin.Api.Helpers
             TranscodingJobType transcodingJobType,
             CancellationTokenSource cancellationTokenSource)
         {
-            if (_httpContextAccessor.HttpContext == null)
+            if (_httpContextAccessor.HttpContext is null)
             {
                 throw new ResourceNotFoundException(nameof(_httpContextAccessor.HttpContext));
             }
@@ -271,7 +271,7 @@ namespace Jellyfin.Api.Helpers
 
             if (EnableAdaptiveBitrateStreaming(state, isLiveStream, enableAdaptiveBitrateStreaming, _httpContextAccessor.HttpContext.GetNormalizedRemoteIp()))
             {
-                var requestedVideoBitrate = state.VideoRequest == null ? 0 : state.VideoRequest.VideoBitRate ?? 0;
+                var requestedVideoBitrate = state.VideoRequest is null ? 0 : state.VideoRequest.VideoBitRate ?? 0;
 
                 // By default, vary by just 200k
                 var variation = GetBitrateVariation(totalBitrate);
@@ -483,7 +483,7 @@ namespace Jellyfin.Api.Helpers
                 return;
             }
 
-            var selectedIndex = state.SubtitleStream == null || state.SubtitleDeliveryMethod != SubtitleDeliveryMethod.Hls ? (int?)null : state.SubtitleStream.Index;
+            var selectedIndex = state.SubtitleStream is null || state.SubtitleDeliveryMethod != SubtitleDeliveryMethod.Hls ? (int?)null : state.SubtitleStream.Index;
             const string Format = "#EXT-X-MEDIA:TYPE=SUBTITLES,GROUP-ID=\"subs\",NAME=\"{0}\",DEFAULT={1},FORCED={2},AUTOSELECT=YES,URI=\"{3}\",LANGUAGE=\"{4}\"";
 
             foreach (var stream in subtitles)
diff --git a/Jellyfin.Api/Helpers/HlsHelpers.cs b/Jellyfin.Api/Helpers/HlsHelpers.cs
index 4567621470..0f6d2aef77 100644
--- a/Jellyfin.Api/Helpers/HlsHelpers.cs
+++ b/Jellyfin.Api/Helpers/HlsHelpers.cs
@@ -47,7 +47,7 @@ namespace Jellyfin.Api.Helpers
                         while (!reader.EndOfStream)
                         {
                             var line = await reader.ReadLineAsync().ConfigureAwait(false);
-                            if (line == null)
+                            if (line is null)
                             {
                                 // Nothing currently in buffer.
                                 break;
diff --git a/Jellyfin.Api/Helpers/MediaInfoHelper.cs b/Jellyfin.Api/Helpers/MediaInfoHelper.cs
index 4441ae023e..6134fb7274 100644
--- a/Jellyfin.Api/Helpers/MediaInfoHelper.cs
+++ b/Jellyfin.Api/Helpers/MediaInfoHelper.cs
@@ -390,7 +390,7 @@ namespace Jellyfin.Api.Helpers
             var result = await _mediaSourceManager.OpenLiveStream(request, CancellationToken.None).ConfigureAwait(false);
 
             var profile = request.DeviceProfile;
-            if (profile == null)
+            if (profile is null)
             {
                 var clientCapabilities = _deviceManager.GetCapabilities(httpContext.User.GetDeviceId());
                 if (clientCapabilities != null)
diff --git a/Jellyfin.Api/Helpers/RequestHelpers.cs b/Jellyfin.Api/Helpers/RequestHelpers.cs
index 8c5af013aa..035d84513a 100644
--- a/Jellyfin.Api/Helpers/RequestHelpers.cs
+++ b/Jellyfin.Api/Helpers/RequestHelpers.cs
@@ -96,7 +96,7 @@ namespace Jellyfin.Api.Helpers
                 httpContext.GetNormalizedRemoteIp().ToString(),
                 user).ConfigureAwait(false);
 
-            if (session == null)
+            if (session is null)
             {
                 throw new ArgumentException("Session not found.");
             }
diff --git a/Jellyfin.Api/Helpers/StreamingHelpers.cs b/Jellyfin.Api/Helpers/StreamingHelpers.cs
index c8e62999c4..5e01b7dccb 100644
--- a/Jellyfin.Api/Helpers/StreamingHelpers.cs
+++ b/Jellyfin.Api/Helpers/StreamingHelpers.cs
@@ -76,7 +76,7 @@ namespace Jellyfin.Api.Helpers
             }
 
             streamingRequest.StreamOptions = ParseStreamOptions(httpRequest.Query);
-            if (httpRequest.Path.Value == null)
+            if (httpRequest.Path.Value is null)
             {
                 throw new ResourceNotFoundException(nameof(httpRequest.Path));
             }
@@ -142,7 +142,7 @@ namespace Jellyfin.Api.Helpers
                     mediaSource = currentJob.MediaSource;
                 }
 
-                if (mediaSource == null)
+                if (mediaSource is null)
                 {
                     var mediaSources = await mediaSourceManager.GetPlaybackMediaSources(libraryManager.GetItemById(streamingRequest.Id), null, false, false, cancellationToken).ConfigureAwait(false);
 
@@ -150,7 +150,7 @@ namespace Jellyfin.Api.Helpers
                         ? mediaSources[0]
                         : mediaSources.Find(i => string.Equals(i.Id, streamingRequest.MediaSourceId, StringComparison.Ordinal));
 
-                    if (mediaSource == null && Guid.Parse(streamingRequest.MediaSourceId).Equals(streamingRequest.Id))
+                    if (mediaSource is null && Guid.Parse(streamingRequest.MediaSourceId).Equals(streamingRequest.Id))
                     {
                         mediaSource = mediaSources[0];
                     }
@@ -510,16 +510,16 @@ namespace Jellyfin.Api.Helpers
             {
                 state.DeviceProfile = dlnaManager.GetProfile(deviceProfileId);
 
-                if (state.DeviceProfile == null)
+                if (state.DeviceProfile is null)
                 {
                     var caps = deviceManager.GetCapabilities(deviceProfileId);
-                    state.DeviceProfile = caps == null ? dlnaManager.GetProfile(request.Headers) : caps.DeviceProfile;
+                    state.DeviceProfile = caps is null ? dlnaManager.GetProfile(request.Headers) : caps.DeviceProfile;
                 }
             }
 
             var profile = state.DeviceProfile;
 
-            if (profile == null)
+            if (profile is null)
             {
                 // Don't use settings from the default profile.
                 // Only use a specific profile if it was requested.
diff --git a/Jellyfin.Api/Helpers/TranscodingJobHelper.cs b/Jellyfin.Api/Helpers/TranscodingJobHelper.cs
index c663c6e310..592f22d8dd 100644
--- a/Jellyfin.Api/Helpers/TranscodingJobHelper.cs
+++ b/Jellyfin.Api/Helpers/TranscodingJobHelper.cs
@@ -829,7 +829,7 @@ namespace Jellyfin.Api.Helpers
             {
                 var job = _activeTranscodingJobs.FirstOrDefault(j => j.Type == type && string.Equals(j.Path, path, StringComparison.OrdinalIgnoreCase));
 
-                if (job == null)
+                if (job is null)
                 {
                     return null;
                 }
diff --git a/Jellyfin.Api/ModelBinders/NullableEnumModelBinderProvider.cs b/Jellyfin.Api/ModelBinders/NullableEnumModelBinderProvider.cs
index 2ccfd0c06e..da0addd0eb 100644
--- a/Jellyfin.Api/ModelBinders/NullableEnumModelBinderProvider.cs
+++ b/Jellyfin.Api/ModelBinders/NullableEnumModelBinderProvider.cs
@@ -14,7 +14,7 @@ namespace Jellyfin.Api.ModelBinders
         public IModelBinder? GetBinder(ModelBinderProviderContext context)
         {
             var nullableType = Nullable.GetUnderlyingType(context.Metadata.ModelType);
-            if (nullableType == null || !nullableType.IsEnum)
+            if (nullableType is null || !nullableType.IsEnum)
             {
                 // Type isn't nullable or isn't an enum.
                 return null;
diff --git a/Jellyfin.Api/Models/PlaybackDtos/TranscodingJobDto.cs b/Jellyfin.Api/Models/PlaybackDtos/TranscodingJobDto.cs
index ab67c8732a..bb0f51936f 100644
--- a/Jellyfin.Api/Models/PlaybackDtos/TranscodingJobDto.cs
+++ b/Jellyfin.Api/Models/PlaybackDtos/TranscodingJobDto.cs
@@ -220,7 +220,7 @@ namespace Jellyfin.Api.Models.PlaybackDtos
 
             lock (_timerLock)
             {
-                if (KillTimer == null)
+                if (KillTimer is null)
                 {
                     Logger.LogDebug("Starting kill timer at {0}ms. JobId {1} PlaySessionId {2}", intervalMs, Id, PlaySessionId);
                     KillTimer = new Timer(new TimerCallback(callback), this, intervalMs, Timeout.Infinite);
diff --git a/Jellyfin.Data/Entities/User.cs b/Jellyfin.Data/Entities/User.cs
index 26c46a704f..e2cd659e74 100644
--- a/Jellyfin.Data/Entities/User.cs
+++ b/Jellyfin.Data/Entities/User.cs
@@ -373,7 +373,7 @@ namespace Jellyfin.Data.Entities
         public void SetPermission(PermissionKind kind, bool value)
         {
             var currentPermission = Permissions.FirstOrDefault(p => p.Kind == kind);
-            if (currentPermission == null)
+            if (currentPermission is null)
             {
                 Permissions.Add(new Permission(kind, value));
             }
@@ -442,7 +442,7 @@ namespace Jellyfin.Data.Entities
         {
             var value = string.Join(Delimiter, values);
             var currentPreference = Preferences.FirstOrDefault(p => p.Kind == preference);
-            if (currentPreference == null)
+            if (currentPreference is null)
             {
                 Preferences.Add(new Preference(preference, value));
             }
@@ -462,7 +462,7 @@ namespace Jellyfin.Data.Entities
         {
             var value = string.Join(Delimiter, values);
             var currentPreference = Preferences.FirstOrDefault(p => p.Kind == preference);
-            if (currentPreference == null)
+            if (currentPreference is null)
             {
                 Preferences.Add(new Preference(preference, value));
             }
diff --git a/Jellyfin.Drawing.Skia/SkiaEncoder.cs b/Jellyfin.Drawing.Skia/SkiaEncoder.cs
index 84b261b545..02b69398e1 100644
--- a/Jellyfin.Drawing.Skia/SkiaEncoder.cs
+++ b/Jellyfin.Drawing.Skia/SkiaEncoder.cs
@@ -250,7 +250,7 @@ namespace Jellyfin.Drawing.Skia
 
             var resultBitmap = SKBitmap.Decode(NormalizePath(path));
 
-            if (resultBitmap == null)
+            if (resultBitmap is null)
             {
                 return Decode(path, true, orientation, out origin);
             }
@@ -414,7 +414,7 @@ namespace Jellyfin.Drawing.Skia
             var hasIndicator = options.AddPlayedIndicator || options.UnplayedCount.HasValue || !options.PercentPlayed.Equals(0);
 
             using var bitmap = GetBitmap(inputPath, autoOrient, orientation);
-            if (bitmap == null)
+            if (bitmap is null)
             {
                 throw new InvalidDataException($"Skia unable to read image {inputPath}");
             }
diff --git a/Jellyfin.Drawing.Skia/SplashscreenBuilder.cs b/Jellyfin.Drawing.Skia/SplashscreenBuilder.cs
index e5fa6c2bd1..7fbae33495 100644
--- a/Jellyfin.Drawing.Skia/SplashscreenBuilder.cs
+++ b/Jellyfin.Drawing.Skia/SplashscreenBuilder.cs
@@ -85,7 +85,7 @@ namespace Jellyfin.Drawing.Skia
                             break;
                     }
 
-                    if (currentImage == null)
+                    if (currentImage is null)
                     {
                         throw new ArgumentException("Not enough valid pictures provided to create a splashscreen!");
                     }
diff --git a/Jellyfin.Drawing.Skia/StripCollageBuilder.cs b/Jellyfin.Drawing.Skia/StripCollageBuilder.cs
index b55a994056..c8b8f3ace4 100644
--- a/Jellyfin.Drawing.Skia/StripCollageBuilder.cs
+++ b/Jellyfin.Drawing.Skia/StripCollageBuilder.cs
@@ -97,7 +97,7 @@ namespace Jellyfin.Drawing.Skia
             canvas.Clear(SKColors.Black);
 
             using var backdrop = SkiaHelper.GetNextValidImage(_skiaEncoder, paths, 0, out _);
-            if (backdrop == null)
+            if (backdrop is null)
             {
                 return bitmap;
             }
@@ -164,7 +164,7 @@ namespace Jellyfin.Drawing.Skia
                     using var currentBitmap = SkiaHelper.GetNextValidImage(_skiaEncoder, paths, imageIndex, out int newIndex);
                     imageIndex = newIndex;
 
-                    if (currentBitmap == null)
+                    if (currentBitmap is null)
                     {
                         continue;
                     }
diff --git a/Jellyfin.Networking/Manager/NetworkManager.cs b/Jellyfin.Networking/Manager/NetworkManager.cs
index 9e06cdfe71..519b681615 100644
--- a/Jellyfin.Networking/Manager/NetworkManager.cs
+++ b/Jellyfin.Networking/Manager/NetworkManager.cs
@@ -232,7 +232,7 @@ namespace Jellyfin.Networking.Manager
         public Collection<IPObject> CreateIPCollection(string[] values, bool negated = false)
         {
             Collection<IPObject> col = new Collection<IPObject>();
-            if (values == null)
+            if (values is null)
             {
                 return col;
             }
@@ -515,7 +515,7 @@ namespace Jellyfin.Networking.Manager
         /// <inheritdoc/>
         public Collection<IPObject> GetFilteredLANSubnets(Collection<IPObject>? filter = null)
         {
-            if (filter == null)
+            if (filter is null)
             {
                 return _lanSubnets.Exclude(_excludedSubnets, true).AsNetworks();
             }
@@ -880,7 +880,7 @@ namespace Jellyfin.Networking.Manager
             {
                 _publishedServerUrls.Clear();
                 string[] overrides = config.PublishedServerUriBySubnet;
-                if (overrides == null)
+                if (overrides is null)
                 {
                     return;
                 }
@@ -1235,12 +1235,12 @@ namespace Jellyfin.Networking.Manager
                     // Find all external bind addresses. Store the default gateway, but check to see if there is a better match first.
                     foreach (var addr in addresses.OrderBy(p => p.Tag))
                     {
-                        if (defaultGateway == null && !IsInLocalNetwork(addr))
+                        if (defaultGateway is null && !IsInLocalNetwork(addr))
                         {
                             defaultGateway = addr.Address;
                         }
 
-                        if (bindAddress == null && addr.Contains(source))
+                        if (bindAddress is null && addr.Contains(source))
                         {
                             bindAddress = addr.Address;
                         }
diff --git a/Jellyfin.Server.Implementations/Devices/DeviceManager.cs b/Jellyfin.Server.Implementations/Devices/DeviceManager.cs
index eeb958c620..321a16d475 100644
--- a/Jellyfin.Server.Implementations/Devices/DeviceManager.cs
+++ b/Jellyfin.Server.Implementations/Devices/DeviceManager.cs
@@ -55,7 +55,7 @@ namespace Jellyfin.Server.Implementations.Devices
             await using (dbContext.ConfigureAwait(false))
             {
                 deviceOptions = await dbContext.DeviceOptions.AsQueryable().FirstOrDefaultAsync(dev => dev.DeviceId == deviceId).ConfigureAwait(false);
-                if (deviceOptions == null)
+                if (deviceOptions is null)
                 {
                     deviceOptions = new DeviceOptions(deviceId);
                     dbContext.DeviceOptions.Add(deviceOptions);
@@ -121,7 +121,7 @@ namespace Jellyfin.Server.Implementations.Devices
                     .ConfigureAwait(false);
             }
 
-            var deviceInfo = device == null ? null : ToDeviceInfo(device);
+            var deviceInfo = device is null ? null : ToDeviceInfo(device);
 
             return deviceInfo;
         }
diff --git a/Jellyfin.Server.Implementations/Events/Consumers/Session/PlaybackStartLogger.cs b/Jellyfin.Server.Implementations/Events/Consumers/Session/PlaybackStartLogger.cs
index aa6015caae..bb98a6c342 100644
--- a/Jellyfin.Server.Implementations/Events/Consumers/Session/PlaybackStartLogger.cs
+++ b/Jellyfin.Server.Implementations/Events/Consumers/Session/PlaybackStartLogger.cs
@@ -38,7 +38,7 @@ namespace Jellyfin.Server.Implementations.Events.Consumers.Session
         /// <inheritdoc />
         public async Task OnEvent(PlaybackStartEventArgs eventArgs)
         {
-            if (eventArgs.MediaInfo == null)
+            if (eventArgs.MediaInfo is null)
             {
                 _logger.LogWarning("PlaybackStart reported with null media info.");
                 return;
diff --git a/Jellyfin.Server.Implementations/Events/Consumers/Session/PlaybackStopLogger.cs b/Jellyfin.Server.Implementations/Events/Consumers/Session/PlaybackStopLogger.cs
index 1648b1b475..baa957390a 100644
--- a/Jellyfin.Server.Implementations/Events/Consumers/Session/PlaybackStopLogger.cs
+++ b/Jellyfin.Server.Implementations/Events/Consumers/Session/PlaybackStopLogger.cs
@@ -40,7 +40,7 @@ namespace Jellyfin.Server.Implementations.Events.Consumers.Session
         {
             var item = eventArgs.MediaInfo;
 
-            if (item == null)
+            if (item is null)
             {
                 _logger.LogWarning("PlaybackStopped reported with null media info.");
                 return;
@@ -60,7 +60,7 @@ namespace Jellyfin.Server.Implementations.Events.Consumers.Session
             var user = eventArgs.Users[0];
 
             var notificationType = GetPlaybackStoppedNotificationType(item.MediaType);
-            if (notificationType == null)
+            if (notificationType is null)
             {
                 return;
             }
diff --git a/Jellyfin.Server.Implementations/Events/EventManager.cs b/Jellyfin.Server.Implementations/Events/EventManager.cs
index 7f7c4750d8..f49ae8e27a 100644
--- a/Jellyfin.Server.Implementations/Events/EventManager.cs
+++ b/Jellyfin.Server.Implementations/Events/EventManager.cs
@@ -44,7 +44,7 @@ namespace Jellyfin.Server.Implementations.Events
             where T : EventArgs
         {
             using var scope = _appHost.ServiceProvider?.CreateScope();
-            if (scope == null)
+            if (scope is null)
             {
                 return;
             }
diff --git a/Jellyfin.Server.Implementations/Extensions/ServiceCollectionExtensions.cs b/Jellyfin.Server.Implementations/Extensions/ServiceCollectionExtensions.cs
index f98a0aede8..05c6229316 100644
--- a/Jellyfin.Server.Implementations/Extensions/ServiceCollectionExtensions.cs
+++ b/Jellyfin.Server.Implementations/Extensions/ServiceCollectionExtensions.cs
@@ -27,7 +27,7 @@ public static class ServiceCollectionExtensions
                 .UseCacheKeyPrefix("EF_")
                 // Don't cache null values. Remove this optional setting if it's not necessary.
                 .SkipCachingResults(result =>
-                    result.Value == null || (result.Value is EFTableRows rows && rows.RowsCount == 0)));
+                    result.Value is null || (result.Value is EFTableRows rows && rows.RowsCount == 0)));
 
         serviceCollection.AddPooledDbContextFactory<JellyfinDb>((serviceProvider, opt) =>
         {
diff --git a/Jellyfin.Server.Implementations/Security/AuthenticationManager.cs b/Jellyfin.Server.Implementations/Security/AuthenticationManager.cs
index 33c08c8c29..810e578075 100644
--- a/Jellyfin.Server.Implementations/Security/AuthenticationManager.cs
+++ b/Jellyfin.Server.Implementations/Security/AuthenticationManager.cs
@@ -65,7 +65,7 @@ namespace Jellyfin.Server.Implementations.Security
                     .FirstOrDefaultAsync()
                     .ConfigureAwait(false);
 
-                if (key == null)
+                if (key is null)
                 {
                     return;
                 }
diff --git a/Jellyfin.Server.Implementations/Users/DefaultAuthenticationProvider.cs b/Jellyfin.Server.Implementations/Users/DefaultAuthenticationProvider.cs
index 7480a05c25..72f3d6e8ec 100644
--- a/Jellyfin.Server.Implementations/Users/DefaultAuthenticationProvider.cs
+++ b/Jellyfin.Server.Implementations/Users/DefaultAuthenticationProvider.cs
@@ -41,7 +41,7 @@ namespace Jellyfin.Server.Implementations.Users
         // This is the version that we need to use for local users. Because reasons.
         public Task<ProviderAuthenticationResult> Authenticate(string username, string password, User resolvedUser)
         {
-            if (resolvedUser == null)
+            if (resolvedUser is null)
             {
                 throw new AuthenticationException("Specified user does not exist.");
             }
@@ -58,7 +58,7 @@ namespace Jellyfin.Server.Implementations.Users
             }
 
             // Handle the case when the stored password is null, but the user tried to login with a password
-            if (resolvedUser.Password == null)
+            if (resolvedUser.Password is null)
             {
                 throw new AuthenticationException("Invalid username or password");
             }
diff --git a/Jellyfin.Server.Implementations/Users/DisplayPreferencesManager.cs b/Jellyfin.Server.Implementations/Users/DisplayPreferencesManager.cs
index 87babc05c8..fddad1c4f9 100644
--- a/Jellyfin.Server.Implementations/Users/DisplayPreferencesManager.cs
+++ b/Jellyfin.Server.Implementations/Users/DisplayPreferencesManager.cs
@@ -34,7 +34,7 @@ namespace Jellyfin.Server.Implementations.Users
                 .FirstOrDefault(pref =>
                     pref.UserId.Equals(userId) && string.Equals(pref.Client, client) && pref.ItemId.Equals(itemId));
 
-            if (prefs == null)
+            if (prefs is null)
             {
                 prefs = new DisplayPreferences(userId, itemId, client);
                 _dbContext.DisplayPreferences.Add(prefs);
@@ -49,7 +49,7 @@ namespace Jellyfin.Server.Implementations.Users
             var prefs = _dbContext.ItemDisplayPreferences
                 .FirstOrDefault(pref => pref.UserId.Equals(userId) && pref.ItemId.Equals(itemId) && string.Equals(pref.Client, client));
 
-            if (prefs == null)
+            if (prefs is null)
             {
                 prefs = new ItemDisplayPreferences(userId, Guid.Empty, client);
                 _dbContext.ItemDisplayPreferences.Add(prefs);
diff --git a/Jellyfin.Server.Implementations/Users/UserManager.cs b/Jellyfin.Server.Implementations/Users/UserManager.cs
index 25560707ac..131853aed4 100644
--- a/Jellyfin.Server.Implementations/Users/UserManager.cs
+++ b/Jellyfin.Server.Implementations/Users/UserManager.cs
@@ -401,7 +401,7 @@ namespace Jellyfin.Server.Implementations.Users
             var authenticationProvider = authResult.AuthenticationProvider;
             var success = authResult.Success;
 
-            if (user == null)
+            if (user is null)
             {
                 string updatedUsername = authResult.Username;
 
@@ -434,7 +434,7 @@ namespace Jellyfin.Server.Implementations.Users
                 }
             }
 
-            if (user == null)
+            if (user is null)
             {
                 _logger.LogInformation(
                     "Authentication request for {UserName} has been denied (IP: {IP}).",
@@ -708,7 +708,7 @@ namespace Jellyfin.Server.Implementations.Users
         /// <inheritdoc/>
         public async Task ClearProfileImageAsync(User user)
         {
-            if (user.ProfileImage == null)
+            if (user.ProfileImage is null)
             {
                 return;
             }
diff --git a/Jellyfin.Server/Filters/FileResponseFilter.cs b/Jellyfin.Server/Filters/FileResponseFilter.cs
index eae9a80048..544fdbfd63 100644
--- a/Jellyfin.Server/Filters/FileResponseFilter.cs
+++ b/Jellyfin.Server/Filters/FileResponseFilter.cs
@@ -31,7 +31,7 @@ namespace Jellyfin.Server.Filters
                         .FirstOrDefault(o => o.Key.Equals(SuccessCode, StringComparison.Ordinal));
 
                     // Operation doesn't have a response.
-                    if (response.Value == null)
+                    if (response.Value is null)
                     {
                         continue;
                     }
diff --git a/Jellyfin.Server/Formatters/CssOutputFormatter.cs b/Jellyfin.Server/Formatters/CssOutputFormatter.cs
index cfc9d1ad3b..fdaa48f847 100644
--- a/Jellyfin.Server/Formatters/CssOutputFormatter.cs
+++ b/Jellyfin.Server/Formatters/CssOutputFormatter.cs
@@ -30,7 +30,7 @@ namespace Jellyfin.Server.Formatters
         public override Task WriteResponseBodyAsync(OutputFormatterWriteContext context, Encoding selectedEncoding)
         {
             var stringResponse = context.Object?.ToString();
-            return stringResponse == null ? Task.CompletedTask : context.HttpContext.Response.WriteAsync(stringResponse);
+            return stringResponse is null ? Task.CompletedTask : context.HttpContext.Response.WriteAsync(stringResponse);
         }
     }
 }
diff --git a/Jellyfin.Server/Formatters/XmlOutputFormatter.cs b/Jellyfin.Server/Formatters/XmlOutputFormatter.cs
index be0baea2d2..156368d695 100644
--- a/Jellyfin.Server/Formatters/XmlOutputFormatter.cs
+++ b/Jellyfin.Server/Formatters/XmlOutputFormatter.cs
@@ -27,7 +27,7 @@ namespace Jellyfin.Server.Formatters
         public override Task WriteResponseBodyAsync(OutputFormatterWriteContext context, Encoding selectedEncoding)
         {
             var stringResponse = context.Object?.ToString();
-            return stringResponse == null ? Task.CompletedTask : context.HttpContext.Response.WriteAsync(stringResponse);
+            return stringResponse is null ? Task.CompletedTask : context.HttpContext.Response.WriteAsync(stringResponse);
         }
     }
 }
diff --git a/Jellyfin.Server/Migrations/Routines/MigrateDisplayPreferencesDb.cs b/Jellyfin.Server/Migrations/Routines/MigrateDisplayPreferencesDb.cs
index 37716482c3..0fad77cfe6 100644
--- a/Jellyfin.Server/Migrations/Routines/MigrateDisplayPreferencesDb.cs
+++ b/Jellyfin.Server/Migrations/Routines/MigrateDisplayPreferencesDb.cs
@@ -91,7 +91,7 @@ namespace Jellyfin.Server.Migrations.Routines
                 foreach (var result in results)
                 {
                     var dto = JsonSerializer.Deserialize<DisplayPreferencesDto>(result[3].ToBlob(), _jsonOptions);
-                    if (dto == null)
+                    if (dto is null)
                     {
                         continue;
                     }
@@ -108,7 +108,7 @@ namespace Jellyfin.Server.Migrations.Routines
 
                     displayPrefs.Add(displayPreferencesKey);
                     var existingUser = _userManager.GetUserById(dtoUserId);
-                    if (existingUser == null)
+                    if (existingUser is null)
                     {
                         _logger.LogWarning("User with ID {UserId} does not exist in the database, skipping migration.", dtoUserId);
                         continue;
diff --git a/Jellyfin.Server/Migrations/Routines/MigrateUserDb.cs b/Jellyfin.Server/Migrations/Routines/MigrateUserDb.cs
index 0c2cc69a7e..2dbd82e8fd 100644
--- a/Jellyfin.Server/Migrations/Routines/MigrateUserDb.cs
+++ b/Jellyfin.Server/Migrations/Routines/MigrateUserDb.cs
@@ -76,7 +76,7 @@ namespace Jellyfin.Server.Migrations.Routines
                 foreach (var entry in queryResult)
                 {
                     UserMockup? mockup = JsonSerializer.Deserialize<UserMockup>(entry[2].ToBlob(), JsonDefaults.Options);
-                    if (mockup == null)
+                    if (mockup is null)
                     {
                         continue;
                     }
diff --git a/Jellyfin.Server/Program.cs b/Jellyfin.Server/Program.cs
index 7ed8388256..b0455aafb3 100644
--- a/Jellyfin.Server/Program.cs
+++ b/Jellyfin.Server/Program.cs
@@ -677,7 +677,7 @@ namespace Jellyfin.Server
             {
                 var xdgRuntimeDir = Environment.GetEnvironmentVariable("XDG_RUNTIME_DIR");
                 var socketFile = "jellyfin.sock";
-                if (xdgRuntimeDir == null)
+                if (xdgRuntimeDir is null)
                 {
                     // Fall back to config dir
                     socketPath = Path.Join(appPaths.ConfigurationDirectoryPath, socketFile);
diff --git a/MediaBrowser.Common/Extensions/HttpContextExtensions.cs b/MediaBrowser.Common/Extensions/HttpContextExtensions.cs
index 1e5877c84c..6608704c0a 100644
--- a/MediaBrowser.Common/Extensions/HttpContextExtensions.cs
+++ b/MediaBrowser.Common/Extensions/HttpContextExtensions.cs
@@ -15,8 +15,8 @@ namespace MediaBrowser.Common.Extensions
         /// <returns><c>true</c> if the request is coming from LAN, <c>false</c> otherwise.</returns>
         public static bool IsLocal(this HttpContext context)
         {
-            return (context.Connection.LocalIpAddress == null
-                    && context.Connection.RemoteIpAddress == null)
+            return (context.Connection.LocalIpAddress is null
+                    && context.Connection.RemoteIpAddress is null)
                    || Equals(context.Connection.LocalIpAddress, context.Connection.RemoteIpAddress);
         }
 
diff --git a/MediaBrowser.Common/Net/NetworkExtensions.cs b/MediaBrowser.Common/Net/NetworkExtensions.cs
index 7ad0058540..5e5e5b81b7 100644
--- a/MediaBrowser.Common/Net/NetworkExtensions.cs
+++ b/MediaBrowser.Common/Net/NetworkExtensions.cs
@@ -114,7 +114,7 @@ namespace MediaBrowser.Common.Net
         /// <returns>True if both are equal.</returns>
         public static bool Compare(this Collection<IPObject> source, Collection<IPObject> dest)
         {
-            if (dest == null || source.Count != dest.Count)
+            if (dest is null || source.Count != dest.Count)
             {
                 return false;
             }
@@ -187,7 +187,7 @@ namespace MediaBrowser.Common.Net
         /// <returns>A new collection, with the items excluded.</returns>
         public static Collection<IPObject> Exclude(this Collection<IPObject> source, Collection<IPObject> excludeList, bool isNetwork)
         {
-            if (source.Count == 0 || excludeList == null)
+            if (source.Count == 0 || excludeList is null)
             {
                 return new Collection<IPObject>(source);
             }
diff --git a/MediaBrowser.Common/Plugins/BasePluginOfT.cs b/MediaBrowser.Common/Plugins/BasePluginOfT.cs
index 0da5592d38..19db30cb8b 100644
--- a/MediaBrowser.Common/Plugins/BasePluginOfT.cs
+++ b/MediaBrowser.Common/Plugins/BasePluginOfT.cs
@@ -103,7 +103,7 @@ namespace MediaBrowser.Common.Plugins
             get
             {
                 // Lazy load
-                if (_configuration == null)
+                if (_configuration is null)
                 {
                     lock (_configurationSyncLock)
                     {
diff --git a/MediaBrowser.Common/Plugins/LocalPlugin.cs b/MediaBrowser.Common/Plugins/LocalPlugin.cs
index 4c8e2d5044..96af423cc3 100644
--- a/MediaBrowser.Common/Plugins/LocalPlugin.cs
+++ b/MediaBrowser.Common/Plugins/LocalPlugin.cs
@@ -43,7 +43,7 @@ namespace MediaBrowser.Common.Plugins
         {
             get
             {
-                if (_version == null)
+                if (_version is null)
                 {
                     _version = Version.Parse(Manifest.Version);
                 }
@@ -85,9 +85,9 @@ namespace MediaBrowser.Common.Plugins
         /// <returns>Comparison result.</returns>
         public static int Compare(LocalPlugin a, LocalPlugin b)
         {
-            if (a == null || b == null)
+            if (a is null || b is null)
             {
-                throw new ArgumentNullException(a == null ? nameof(a) : nameof(b));
+                throw new ArgumentNullException(a is null ? nameof(a) : nameof(b));
             }
 
             var compare = string.Compare(a.Name, b.Name, StringComparison.OrdinalIgnoreCase);
@@ -128,7 +128,7 @@ namespace MediaBrowser.Common.Plugins
         /// <inheritdoc />
         public bool Equals(LocalPlugin? other)
         {
-            if (other == null)
+            if (other is null)
             {
                 return false;
             }
diff --git a/MediaBrowser.Controller/BaseItemManager/BaseItemManager.cs b/MediaBrowser.Controller/BaseItemManager/BaseItemManager.cs
index 61539cae56..b0e394dc5a 100644
--- a/MediaBrowser.Controller/BaseItemManager/BaseItemManager.cs
+++ b/MediaBrowser.Controller/BaseItemManager/BaseItemManager.cs
@@ -56,7 +56,7 @@ namespace MediaBrowser.Controller.BaseItemManager
 
             var itemConfig = _serverConfigurationManager.Configuration.MetadataOptions.FirstOrDefault(i => string.Equals(i.ItemType, baseItem.GetType().Name, StringComparison.OrdinalIgnoreCase));
 
-            return itemConfig == null || !itemConfig.DisabledMetadataFetchers.Contains(name.AsSpan(), StringComparison.OrdinalIgnoreCase);
+            return itemConfig is null || !itemConfig.DisabledMetadataFetchers.Contains(name.AsSpan(), StringComparison.OrdinalIgnoreCase);
         }
 
         /// <inheritdoc />
@@ -81,7 +81,7 @@ namespace MediaBrowser.Controller.BaseItemManager
 
             var itemConfig = _serverConfigurationManager.Configuration.MetadataOptions.FirstOrDefault(i => string.Equals(i.ItemType, baseItem.GetType().Name, StringComparison.OrdinalIgnoreCase));
 
-            return itemConfig == null || !itemConfig.DisabledImageFetchers.Contains(name.AsSpan(), StringComparison.OrdinalIgnoreCase);
+            return itemConfig is null || !itemConfig.DisabledImageFetchers.Contains(name.AsSpan(), StringComparison.OrdinalIgnoreCase);
         }
 
         /// <summary>
diff --git a/MediaBrowser.Controller/Drawing/ImageProcessorExtensions.cs b/MediaBrowser.Controller/Drawing/ImageProcessorExtensions.cs
index b036425ab3..62b70ce53c 100644
--- a/MediaBrowser.Controller/Drawing/ImageProcessorExtensions.cs
+++ b/MediaBrowser.Controller/Drawing/ImageProcessorExtensions.cs
@@ -18,7 +18,7 @@ namespace MediaBrowser.Controller.Drawing
         {
             var imageInfo = item.GetImageInfo(imageType, imageIndex);
 
-            if (imageInfo == null)
+            if (imageInfo is null)
             {
                 return null;
             }
diff --git a/MediaBrowser.Controller/Entities/AggregateFolder.cs b/MediaBrowser.Controller/Entities/AggregateFolder.cs
index e671e5c711..4dc78ff86b 100644
--- a/MediaBrowser.Controller/Entities/AggregateFolder.cs
+++ b/MediaBrowser.Controller/Entities/AggregateFolder.cs
@@ -67,7 +67,7 @@ namespace MediaBrowser.Controller.Entities
         {
             lock (_childIdsLock)
             {
-                if (_childrenIds == null || _childrenIds.Length == 0)
+                if (_childrenIds is null || _childrenIds.Length == 0)
                 {
                     var list = base.LoadChildren();
                     _childrenIds = list.Select(i => i.Id).ToArray();
diff --git a/MediaBrowser.Controller/Entities/BaseItem.cs b/MediaBrowser.Controller/Entities/BaseItem.cs
index 7f5f9f74bd..20f0095880 100644
--- a/MediaBrowser.Controller/Entities/BaseItem.cs
+++ b/MediaBrowser.Controller/Entities/BaseItem.cs
@@ -494,7 +494,7 @@ namespace MediaBrowser.Controller.Entities
         {
             get
             {
-                if (_sortName == null)
+                if (_sortName is null)
                 {
                     if (!string.IsNullOrEmpty(ForcedSortName))
                     {
@@ -880,7 +880,7 @@ namespace MediaBrowser.Controller.Entities
         /// <returns>System.String.</returns>
         protected virtual string CreateSortName()
         {
-            if (Name == null)
+            if (Name is null)
             {
                 return null; // some items may not have name filled in properly
             }
@@ -1073,7 +1073,7 @@ namespace MediaBrowser.Controller.Entities
             {
                 var stream = i.VideoStream;
 
-                return stream == null || stream.Width == null ? 0 : stream.Width.Value;
+                return stream is null || stream.Width is null ? 0 : stream.Width.Value;
             })
             .ToList();
         }
@@ -1330,7 +1330,7 @@ namespace MediaBrowser.Controller.Entities
 
         public void SetParent(Folder parent)
         {
-            ParentId = parent == null ? Guid.Empty : parent.Id;
+            ParentId = parent is null ? Guid.Empty : parent.Id;
         }
 
         /// <summary>
@@ -1534,7 +1534,7 @@ namespace MediaBrowser.Controller.Entities
 
             var maxAllowedRating = user.MaxParentalAgeRating;
 
-            if (maxAllowedRating == null)
+            if (maxAllowedRating is null)
             {
                 return true;
             }
@@ -1701,7 +1701,7 @@ namespace MediaBrowser.Controller.Entities
             var item = FindLinkedChild(info);
 
             // If still null, log
-            if (item == null)
+            if (item is null)
             {
                 // Don't keep searching over and over
                 info.ItemId = Guid.Empty;
@@ -1725,7 +1725,7 @@ namespace MediaBrowser.Controller.Entities
 
                 var itemByPath = LibraryManager.FindByPath(path, null);
 
-                if (itemByPath == null)
+                if (itemByPath is null)
                 {
                     Logger.LogWarning("Unable to find linked item at path {0}", info.Path);
                 }
@@ -1737,7 +1737,7 @@ namespace MediaBrowser.Controller.Entities
             {
                 var item = LibraryManager.GetItemById(info.LibraryItemId);
 
-                if (item == null)
+                if (item is null)
                 {
                     Logger.LogWarning("Unable to find linked item at path {0}", info.Path);
                 }
@@ -1892,7 +1892,7 @@ namespace MediaBrowser.Controller.Entities
 
             var existingImage = GetImageInfo(image.Type, index);
 
-            if (existingImage == null)
+            if (existingImage is null)
             {
                 AddImage(image);
             }
@@ -1915,7 +1915,7 @@ namespace MediaBrowser.Controller.Entities
 
             var image = GetImageInfo(type, index);
 
-            if (image == null)
+            if (image is null)
             {
                 AddImage(GetImageInfo(file, type));
             }
@@ -1942,7 +1942,7 @@ namespace MediaBrowser.Controller.Entities
         {
             var info = GetImageInfo(type, index);
 
-            if (info == null)
+            if (info is null)
             {
                 // Nothing to do
                 return;
@@ -2035,7 +2035,7 @@ namespace MediaBrowser.Controller.Entities
             {
                 var chapter = ItemRepository.GetChapter(this, imageIndex);
 
-                if (chapter == null)
+                if (chapter is null)
                 {
                     return null;
                 }
@@ -2147,7 +2147,7 @@ namespace MediaBrowser.Controller.Entities
 
             foreach (var newImage in images)
             {
-                if (newImage == null)
+                if (newImage is null)
                 {
                     throw new ArgumentException("null image found in list");
                 }
@@ -2155,7 +2155,7 @@ namespace MediaBrowser.Controller.Entities
                 var existing = existingImages
                     .Find(i => string.Equals(i.Path, newImage.FullName, StringComparison.OrdinalIgnoreCase));
 
-                if (existing == null)
+                if (existing is null)
                 {
                     newImageList.Add(newImage);
                 }
@@ -2241,7 +2241,7 @@ namespace MediaBrowser.Controller.Entities
             var info1 = GetImageInfo(type, index1);
             var info2 = GetImageInfo(type, index2);
 
-            if (info1 == null || info2 == null)
+            if (info1 is null || info2 is null)
             {
                 // Nothing to do
                 return Task.CompletedTask;
@@ -2290,7 +2290,7 @@ namespace MediaBrowser.Controller.Entities
 
             var userdata = UserDataManager.GetUserData(user, this);
 
-            return userdata == null || !userdata.Played;
+            return userdata is null || !userdata.Played;
         }
 
         ItemLookupInfo IHasLookupInfo<ItemLookupInfo>.GetLookupInfo()
@@ -2445,14 +2445,14 @@ namespace MediaBrowser.Controller.Entities
             // Try to retrieve it from the db. If we don't find it, use the resolved version
             var video = LibraryManager.GetItemById(id) as Video;
 
-            if (video == null)
+            if (video is null)
             {
                 video = LibraryManager.ResolvePath(FileSystem.GetFileSystemInfo(path)) as Video;
 
                 newOptions.ForceSave = true;
             }
 
-            if (video == null)
+            if (video is null)
             {
                 return Task.FromResult(true);
             }
diff --git a/MediaBrowser.Controller/Entities/BaseItemExtensions.cs b/MediaBrowser.Controller/Entities/BaseItemExtensions.cs
index 948eb43754..dc06bf9bda 100644
--- a/MediaBrowser.Controller/Entities/BaseItemExtensions.cs
+++ b/MediaBrowser.Controller/Entities/BaseItemExtensions.cs
@@ -89,7 +89,7 @@ namespace MediaBrowser.Controller.Entities
                 }
 
                 var v = sourceProp.GetValue(source);
-                if (v == null)
+                if (v is null)
                 {
                     continue;
                 }
diff --git a/MediaBrowser.Controller/Entities/Extensions.cs b/MediaBrowser.Controller/Entities/Extensions.cs
index 1acb92fdc6..d4a7793909 100644
--- a/MediaBrowser.Controller/Entities/Extensions.cs
+++ b/MediaBrowser.Controller/Entities/Extensions.cs
@@ -26,7 +26,7 @@ namespace MediaBrowser.Controller.Entities
 
             var current = item.RemoteTrailers.FirstOrDefault(i => string.Equals(i.Url, url, StringComparison.OrdinalIgnoreCase));
 
-            if (current == null)
+            if (current is null)
             {
                 var mediaUrl = new MediaUrl
                 {
diff --git a/MediaBrowser.Controller/Entities/Folder.cs b/MediaBrowser.Controller/Entities/Folder.cs
index 808f918104..9ef5504afb 100644
--- a/MediaBrowser.Controller/Entities/Folder.cs
+++ b/MediaBrowser.Controller/Entities/Folder.cs
@@ -703,7 +703,7 @@ namespace MediaBrowser.Controller.Entities
                 IEnumerable<BaseItem> items;
                 Func<BaseItem, bool> filter = i => UserViewBuilder.Filter(i, user, query, UserDataManager, LibraryManager);
 
-                if (query.User == null)
+                if (query.User is null)
                 {
                     items = GetRecursiveChildren(filter);
                 }
@@ -961,7 +961,7 @@ namespace MediaBrowser.Controller.Entities
 
             IEnumerable<BaseItem> items;
 
-            if (query.User == null)
+            if (query.User is null)
             {
                 items = Children.Where(filter);
             }
@@ -1311,7 +1311,7 @@ namespace MediaBrowser.Controller.Entities
             }
 
             // If there are not sub-folders, proceed as normal.
-            if (children == null)
+            if (children is null)
             {
                 children = GetEligibleChildrenForRecursiveChildren(user);
             }
@@ -1320,7 +1320,7 @@ namespace MediaBrowser.Controller.Entities
             {
                 bool? isVisibleToUser = null;
 
-                if (query == null || UserViewBuilder.FilterItem(child, query))
+                if (query is null || UserViewBuilder.FilterItem(child, query))
                 {
                     isVisibleToUser = child.IsVisible(user);
 
@@ -1345,7 +1345,7 @@ namespace MediaBrowser.Controller.Entities
             {
                 foreach (var child in GetLinkedChildren(user))
                 {
-                    if (query == null || UserViewBuilder.FilterItem(child, query))
+                    if (query is null || UserViewBuilder.FilterItem(child, query))
                     {
                         if (child.IsVisible(user))
                         {
@@ -1402,7 +1402,7 @@ namespace MediaBrowser.Controller.Entities
         {
             foreach (var child in Children)
             {
-                if (filter == null || filter(child))
+                if (filter is null || filter(child))
                 {
                     result[child.Id] = child;
                 }
@@ -1420,7 +1420,7 @@ namespace MediaBrowser.Controller.Entities
             {
                 foreach (var child in GetLinkedChildren())
                 {
-                    if (filter == null || filter(child))
+                    if (filter is null || filter(child))
                     {
                         result[child.Id] = child;
                     }
@@ -1478,7 +1478,7 @@ namespace MediaBrowser.Controller.Entities
 
         public List<BaseItem> GetLinkedChildren(User user)
         {
-            if (!FilterLinkedChildrenPerUser || user == null)
+            if (!FilterLinkedChildrenPerUser || user is null)
             {
                 return GetLinkedChildren();
             }
@@ -1504,7 +1504,7 @@ namespace MediaBrowser.Controller.Entities
             {
                 var child = GetLinkedChild(i);
 
-                if (child == null)
+                if (child is null)
                 {
                     continue;
                 }
diff --git a/MediaBrowser.Controller/Entities/InternalItemsQuery.cs b/MediaBrowser.Controller/Entities/InternalItemsQuery.cs
index 1bf5285382..fc019c0ee7 100644
--- a/MediaBrowser.Controller/Entities/InternalItemsQuery.cs
+++ b/MediaBrowser.Controller/Entities/InternalItemsQuery.cs
@@ -316,7 +316,7 @@ namespace MediaBrowser.Controller.Entities
         {
             set
             {
-                if (value == null)
+                if (value is null)
                 {
                     ParentId = Guid.Empty;
                     ParentType = null;
diff --git a/MediaBrowser.Controller/Entities/ItemImageInfo.cs b/MediaBrowser.Controller/Entities/ItemImageInfo.cs
index ea8555dbfe..0171af27cf 100644
--- a/MediaBrowser.Controller/Entities/ItemImageInfo.cs
+++ b/MediaBrowser.Controller/Entities/ItemImageInfo.cs
@@ -39,6 +39,6 @@ namespace MediaBrowser.Controller.Entities
         public string BlurHash { get; set; }
 
         [JsonIgnore]
-        public bool IsLocalFile => Path == null || !Path.StartsWith("http", StringComparison.OrdinalIgnoreCase);
+        public bool IsLocalFile => Path is null || !Path.StartsWith("http", StringComparison.OrdinalIgnoreCase);
     }
 }
diff --git a/MediaBrowser.Controller/Entities/PeopleHelper.cs b/MediaBrowser.Controller/Entities/PeopleHelper.cs
index 8571bfcea5..46d969ffe4 100644
--- a/MediaBrowser.Controller/Entities/PeopleHelper.cs
+++ b/MediaBrowser.Controller/Entities/PeopleHelper.cs
@@ -53,7 +53,7 @@ namespace MediaBrowser.Controller.Entities
             {
                 // If the actor already exists without a role and we have one, fill it in
                 var existing = people.FirstOrDefault(p => p.Name.Equals(person.Name, StringComparison.OrdinalIgnoreCase) && (p.Type.Equals(PersonType.Actor, StringComparison.OrdinalIgnoreCase) || p.Type.Equals(PersonType.GuestStar, StringComparison.OrdinalIgnoreCase)));
-                if (existing == null)
+                if (existing is null)
                 {
                     // Wasn't there - add it
                     people.Add(person);
@@ -76,7 +76,7 @@ namespace MediaBrowser.Controller.Entities
                             string.Equals(p.Type, person.Type, StringComparison.OrdinalIgnoreCase));
 
                 // Check for dupes based on the combination of Name and Type
-                if (existing == null)
+                if (existing is null)
                 {
                     people.Add(person);
                 }
diff --git a/MediaBrowser.Controller/Entities/TV/Episode.cs b/MediaBrowser.Controller/Entities/TV/Episode.cs
index 15b721fe63..2d9cdb8d04 100644
--- a/MediaBrowser.Controller/Entities/TV/Episode.cs
+++ b/MediaBrowser.Controller/Entities/TV/Episode.cs
@@ -136,7 +136,7 @@ namespace MediaBrowser.Controller.Entities.TV
         public string FindSeriesSortName()
         {
             var series = Series;
-            return series == null ? SeriesName : series.SortName;
+            return series is null ? SeriesName : series.SortName;
         }
 
         public override double GetDefaultPrimaryImageAspectRatio()
@@ -181,14 +181,14 @@ namespace MediaBrowser.Controller.Entities.TV
         public string FindSeriesPresentationUniqueKey()
         {
             var series = Series;
-            return series == null ? null : series.PresentationUniqueKey;
+            return series is null ? null : series.PresentationUniqueKey;
         }
 
         public string FindSeasonName()
         {
             var season = Season;
 
-            if (season == null)
+            if (season is null)
             {
                 if (ParentIndexNumber.HasValue)
                 {
@@ -204,7 +204,7 @@ namespace MediaBrowser.Controller.Entities.TV
         public string FindSeriesName()
         {
             var series = Series;
-            return series == null ? SeriesName : series.Name;
+            return series is null ? SeriesName : series.Name;
         }
 
         public Guid FindSeasonId()
@@ -212,7 +212,7 @@ namespace MediaBrowser.Controller.Entities.TV
             var season = FindParent<Season>();
 
             // Episodes directly in series folder
-            if (season == null)
+            if (season is null)
             {
                 var series = Series;
 
@@ -226,7 +226,7 @@ namespace MediaBrowser.Controller.Entities.TV
                 }
             }
 
-            return season == null ? Guid.Empty : season.Id;
+            return season is null ? Guid.Empty : season.Id;
         }
 
         /// <summary>
@@ -262,7 +262,7 @@ namespace MediaBrowser.Controller.Entities.TV
         public Guid FindSeriesId()
         {
             var series = FindParent<Series>();
-            return series == null ? Guid.Empty : series.Id;
+            return series is null ? Guid.Empty : series.Id;
         }
 
         public override IEnumerable<Guid> GetAncestorIds()
diff --git a/MediaBrowser.Controller/Entities/TV/Season.cs b/MediaBrowser.Controller/Entities/TV/Season.cs
index 599d35da64..19fe16c8f1 100644
--- a/MediaBrowser.Controller/Entities/TV/Season.cs
+++ b/MediaBrowser.Controller/Entities/TV/Season.cs
@@ -93,7 +93,7 @@ namespace MediaBrowser.Controller.Entities.TV
         public string FindSeriesSortName()
         {
             var series = Series;
-            return series == null ? SeriesName : series.SortName;
+            return series is null ? SeriesName : series.SortName;
         }
 
         public override List<string> GetUserDataKeys()
@@ -149,7 +149,7 @@ namespace MediaBrowser.Controller.Entities.TV
 
         protected override QueryResult<BaseItem> GetItemsInternal(InternalItemsQuery query)
         {
-            if (query.User == null)
+            if (query.User is null)
             {
                 return base.GetItemsInternal(query);
             }
@@ -208,13 +208,13 @@ namespace MediaBrowser.Controller.Entities.TV
         public string FindSeriesPresentationUniqueKey()
         {
             var series = Series;
-            return series == null ? null : series.PresentationUniqueKey;
+            return series is null ? null : series.PresentationUniqueKey;
         }
 
         public string FindSeriesName()
         {
             var series = Series;
-            return series == null ? SeriesName : series.Name;
+            return series is null ? SeriesName : series.Name;
         }
 
         public Guid FindSeriesId()
diff --git a/MediaBrowser.Controller/Entities/TV/Series.cs b/MediaBrowser.Controller/Entities/TV/Series.cs
index d66802a64f..069071ee57 100644
--- a/MediaBrowser.Controller/Entities/TV/Series.cs
+++ b/MediaBrowser.Controller/Entities/TV/Series.cs
@@ -266,7 +266,7 @@ namespace MediaBrowser.Controller.Entities.TV
                 DtoOptions = options
             };
 
-            if (user == null || !user.DisplayMissingEpisodes)
+            if (user is null || !user.DisplayMissingEpisodes)
             {
                 query.IsMissing = false;
             }
@@ -384,7 +384,7 @@ namespace MediaBrowser.Controller.Entities.TV
 
         public List<BaseItem> GetSeasonEpisodes(Season parentSeason, User user, IEnumerable<BaseItem> allSeriesEpisodes, DtoOptions options)
         {
-            if (allSeriesEpisodes == null)
+            if (allSeriesEpisodes is null)
             {
                 return GetSeasonEpisodes(parentSeason, user, options);
             }
diff --git a/MediaBrowser.Controller/Entities/UserRootFolder.cs b/MediaBrowser.Controller/Entities/UserRootFolder.cs
index e547db5231..b19b1fa13b 100644
--- a/MediaBrowser.Controller/Entities/UserRootFolder.cs
+++ b/MediaBrowser.Controller/Entities/UserRootFolder.cs
@@ -56,7 +56,7 @@ namespace MediaBrowser.Controller.Entities
         {
             lock (_childIdsLock)
             {
-                if (_childrenIds == null)
+                if (_childrenIds is null)
                 {
                     var list = base.LoadChildren();
                     _childrenIds = list.Select(i => i.Id).ToList();
diff --git a/MediaBrowser.Controller/Entities/UserViewBuilder.cs b/MediaBrowser.Controller/Entities/UserViewBuilder.cs
index f467a60384..7ebf9e5f8b 100644
--- a/MediaBrowser.Controller/Entities/UserViewBuilder.cs
+++ b/MediaBrowser.Controller/Entities/UserViewBuilder.cs
@@ -559,7 +559,7 @@ namespace MediaBrowser.Controller.Entities
                 var val = query.Is3D.Value;
                 var video = item as Video;
 
-                if (video == null || val != video.Video3DFormat.HasValue)
+                if (video is null || val != video.Video3DFormat.HasValue)
                 {
                     return false;
                 }
@@ -689,7 +689,7 @@ namespace MediaBrowser.Controller.Entities
 
                 var video = item as Video;
 
-                if (video == null || val != video.HasSubtitles)
+                if (video is null || val != video.HasSubtitles)
                 {
                     return false;
                 }
@@ -776,7 +776,7 @@ namespace MediaBrowser.Controller.Entities
             if (query.VideoTypes.Length > 0)
             {
                 var video = item as Video;
-                if (video == null || !query.VideoTypes.Contains(video.VideoType))
+                if (video is null || !query.VideoTypes.Contains(video.VideoType))
                 {
                     return false;
                 }
@@ -913,7 +913,7 @@ namespace MediaBrowser.Controller.Entities
             {
                 var episode = item as Episode;
 
-                if (episode == null)
+                if (episode is null)
                 {
                     return false;
                 }
@@ -929,7 +929,7 @@ namespace MediaBrowser.Controller.Entities
 
         private IEnumerable<BaseItem> GetMediaFolders(User user)
         {
-            if (user == null)
+            if (user is null)
             {
                 return _libraryManager.RootFolder
                     .Children
@@ -945,7 +945,7 @@ namespace MediaBrowser.Controller.Entities
 
         private BaseItem[] GetMediaFolders(User user, IEnumerable<string> viewTypes)
         {
-            if (user == null)
+            if (user is null)
             {
                 return GetMediaFolders(null)
                     .Where(i =>
@@ -967,7 +967,7 @@ namespace MediaBrowser.Controller.Entities
 
         private BaseItem[] GetMediaFolders(Folder parent, User user, IEnumerable<string> viewTypes)
         {
-            if (parent == null || parent is UserView)
+            if (parent is null || parent is UserView)
             {
                 return GetMediaFolders(user, viewTypes);
             }
diff --git a/MediaBrowser.Controller/Library/ItemResolveArgs.cs b/MediaBrowser.Controller/Library/ItemResolveArgs.cs
index 91d162b411..f93c890fee 100644
--- a/MediaBrowser.Controller/Library/ItemResolveArgs.cs
+++ b/MediaBrowser.Controller/Library/ItemResolveArgs.cs
@@ -47,7 +47,7 @@ namespace MediaBrowser.Controller.Library
 
         public LibraryOptions LibraryOptions
         {
-            get => _libraryOptions ??= Parent == null ? new LibraryOptions() : BaseItem.LibraryManager.GetLibraryOptions(Parent);
+            get => _libraryOptions ??= Parent is null ? new LibraryOptions() : BaseItem.LibraryManager.GetLibraryOptions(Parent);
             set => _libraryOptions = value;
         }
 
@@ -119,7 +119,7 @@ namespace MediaBrowser.Controller.Library
             get
             {
                 var paths = string.IsNullOrEmpty(Path) ? Array.Empty<string>() : new[] { Path };
-                return AdditionalLocations == null ? paths : paths.Concat(AdditionalLocations).ToArray();
+                return AdditionalLocations is null ? paths : paths.Concat(AdditionalLocations).ToArray();
             }
         }
 
@@ -136,7 +136,7 @@ namespace MediaBrowser.Controller.Library
 
                 // Just in case the user decided to nest episodes.
                 // Not officially supported but in some cases we can handle it.
-                if (item == null)
+                if (item is null)
                 {
                     var parents = parent.GetParents();
                     foreach (var currentParent in parents)
@@ -289,7 +289,7 @@ namespace MediaBrowser.Controller.Library
         {
             if (args != null)
             {
-                if (args.Path == null && Path == null)
+                if (args.Path is null && Path is null)
                 {
                     return true;
                 }
diff --git a/MediaBrowser.Controller/Library/NameExtensions.cs b/MediaBrowser.Controller/Library/NameExtensions.cs
index 9d78b8b6c8..919570e893 100644
--- a/MediaBrowser.Controller/Library/NameExtensions.cs
+++ b/MediaBrowser.Controller/Library/NameExtensions.cs
@@ -15,7 +15,7 @@ namespace MediaBrowser.Controller.Library
 
         private static string RemoveDiacritics(string? name)
         {
-            if (name == null)
+            if (name is null)
             {
                 return string.Empty;
             }
diff --git a/MediaBrowser.Controller/LiveTv/LiveTvChannel.cs b/MediaBrowser.Controller/LiveTv/LiveTvChannel.cs
index 335222da96..9788260420 100644
--- a/MediaBrowser.Controller/LiveTv/LiveTvChannel.cs
+++ b/MediaBrowser.Controller/LiveTv/LiveTvChannel.cs
@@ -139,7 +139,7 @@ namespace MediaBrowser.Controller.LiveTv
                 Path = Path,
                 RunTimeTicks = RunTimeTicks,
                 Type = MediaSourceType.Placeholder,
-                IsInfiniteStream = RunTimeTicks == null
+                IsInfiniteStream = RunTimeTicks is null
             };
 
             list.Add(info);
diff --git a/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs b/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs
index fae53acbfb..d423a2fbe4 100644
--- a/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs
+++ b/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs
@@ -162,7 +162,7 @@ namespace MediaBrowser.Controller.MediaEncoding
 
         private bool IsHwTonemapAvailable(EncodingJobInfo state, EncodingOptions options)
         {
-            if (state.VideoStream == null
+            if (state.VideoStream is null
                 || !options.EnableTonemapping
                 || GetVideoColorBitDepth(state) != 10)
             {
@@ -189,7 +189,7 @@ namespace MediaBrowser.Controller.MediaEncoding
 
         private bool IsVulkanHwTonemapAvailable(EncodingJobInfo state, EncodingOptions options)
         {
-            if (state.VideoStream == null)
+            if (state.VideoStream is null)
             {
                 return false;
             }
@@ -202,7 +202,7 @@ namespace MediaBrowser.Controller.MediaEncoding
 
         private bool IsVaapiVppTonemapAvailable(EncodingJobInfo state, EncodingOptions options)
         {
-            if (state.VideoStream == null
+            if (state.VideoStream is null
                 || !options.EnableVppTonemapping
                 || GetVideoColorBitDepth(state) != 10)
             {
@@ -1066,7 +1066,7 @@ namespace MediaBrowser.Controller.MediaEncoding
 
         public string GetVideoBitrateParam(EncodingJobInfo state, string videoCodec)
         {
-            if (state.OutputVideoBitrate == null)
+            if (state.OutputVideoBitrate is null)
             {
                 return string.Empty;
             }
@@ -2076,7 +2076,7 @@ namespace MediaBrowser.Controller.MediaEncoding
 
         public int? GetAudioBitrateParam(int? audioBitRate, string audioCodec, MediaStream audioStream)
         {
-            if (audioStream == null)
+            if (audioStream is null)
             {
                 return null;
             }
@@ -2167,7 +2167,7 @@ namespace MediaBrowser.Controller.MediaEncoding
         /// <returns>System.Nullable{System.Int32}.</returns>
         public int? GetNumAudioChannelsParam(EncodingJobInfo state, MediaStream audioStream, string outputAudioCodec)
         {
-            if (audioStream == null)
+            if (audioStream is null)
             {
                 return null;
             }
@@ -2320,7 +2320,7 @@ namespace MediaBrowser.Controller.MediaEncoding
             // If we don't have known media info
             // If input is video, use -sn to drop subtitles
             // Otherwise just return empty
-            if (state.VideoStream == null && state.AudioStream == null)
+            if (state.VideoStream is null && state.AudioStream is null)
             {
                 return state.IsInputVideo ? "-sn" : string.Empty;
             }
@@ -2385,7 +2385,7 @@ namespace MediaBrowser.Controller.MediaEncoding
             }
 
             var subtitleMethod = state.SubtitleDeliveryMethod;
-            if (state.SubtitleStream == null || subtitleMethod == SubtitleDeliveryMethod.Hls)
+            if (state.SubtitleStream is null || subtitleMethod == SubtitleDeliveryMethod.Hls)
             {
                 args += " -map -0:s";
             }
@@ -2731,7 +2731,7 @@ namespace MediaBrowser.Controller.MediaEncoding
             }
 
             // default
-            if (filter == null)
+            if (filter is null)
             {
                 if (requestedHeight > 0)
                 {
@@ -4440,7 +4440,7 @@ namespace MediaBrowser.Controller.MediaEncoding
             string outputVideoCodec)
         {
             var videoStream = state.VideoStream;
-            if (videoStream == null)
+            if (videoStream is null)
             {
                 return string.Empty;
             }
@@ -4623,7 +4623,7 @@ namespace MediaBrowser.Controller.MediaEncoding
         {
             var videoStream = state.VideoStream;
             var mediaSource = state.MediaSource;
-            if (videoStream == null || mediaSource == null)
+            if (videoStream is null || mediaSource is null)
             {
                 return null;
             }
@@ -5469,7 +5469,7 @@ namespace MediaBrowser.Controller.MediaEncoding
                 return;
             }
 
-            var inputChannels = audioStream == null ? 6 : audioStream.Channels ?? 6;
+            var inputChannels = audioStream is null ? 6 : audioStream.Channels ?? 6;
             if (inputChannels >= 6)
             {
                 return;
@@ -5521,7 +5521,7 @@ namespace MediaBrowser.Controller.MediaEncoding
 
         private void NormalizeSubtitleEmbed(EncodingJobInfo state)
         {
-            if (state.SubtitleStream == null || state.SubtitleDeliveryMethod != SubtitleDeliveryMethod.Embed)
+            if (state.SubtitleStream is null || state.SubtitleDeliveryMethod != SubtitleDeliveryMethod.Embed)
             {
                 return;
             }
@@ -5536,7 +5536,7 @@ namespace MediaBrowser.Controller.MediaEncoding
 
         public string GetSubtitleEmbedArguments(EncodingJobInfo state)
         {
-            if (state.SubtitleStream == null || state.SubtitleDeliveryMethod != SubtitleDeliveryMethod.Embed)
+            if (state.SubtitleStream is null || state.SubtitleDeliveryMethod != SubtitleDeliveryMethod.Embed)
             {
                 return string.Empty;
             }
@@ -5694,7 +5694,7 @@ namespace MediaBrowser.Controller.MediaEncoding
         public string GetProgressiveVideoAudioArguments(EncodingJobInfo state, EncodingOptions encodingOptions)
         {
             // If the video doesn't have an audio stream, return a default.
-            if (state.AudioStream == null && state.VideoStream != null)
+            if (state.AudioStream is null && state.VideoStream != null)
             {
                 return string.Empty;
             }
diff --git a/MediaBrowser.Controller/MediaEncoding/EncodingJobInfo.cs b/MediaBrowser.Controller/MediaEncoding/EncodingJobInfo.cs
index c9625cf1da..5d13cb8ed8 100644
--- a/MediaBrowser.Controller/MediaEncoding/EncodingJobInfo.cs
+++ b/MediaBrowser.Controller/MediaEncoding/EncodingJobInfo.cs
@@ -40,7 +40,7 @@ namespace MediaBrowser.Controller.MediaEncoding
             {
                 if (!_transcodeReasons.HasValue)
                 {
-                    if (BaseRequest.TranscodeReasons == null)
+                    if (BaseRequest.TranscodeReasons is null)
                     {
                         _transcodeReasons = 0;
                         return 0;
@@ -305,7 +305,7 @@ namespace MediaBrowser.Controller.MediaEncoding
                 if (BaseRequest.Static
                     || EncodingHelper.IsCopyCodec(OutputVideoCodec))
                 {
-                    return VideoStream == null ? null : (VideoStream.AverageFrameRate ?? VideoStream.RealFrameRate);
+                    return VideoStream is null ? null : (VideoStream.AverageFrameRate ?? VideoStream.RealFrameRate);
                 }
 
                 return BaseRequest.MaxFramerate ?? BaseRequest.Framerate;
@@ -419,7 +419,7 @@ namespace MediaBrowser.Controller.MediaEncoding
         {
             get
             {
-                if (VideoStream == null)
+                if (VideoStream is null)
                 {
                     return null;
                 }
@@ -437,7 +437,7 @@ namespace MediaBrowser.Controller.MediaEncoding
         {
             get
             {
-                if (AudioStream == null)
+                if (AudioStream is null)
                 {
                     return null;
                 }
diff --git a/MediaBrowser.Controller/Providers/MetadataResult.cs b/MediaBrowser.Controller/Providers/MetadataResult.cs
index 58a0fa2a9a..952dd48703 100644
--- a/MediaBrowser.Controller/Providers/MetadataResult.cs
+++ b/MediaBrowser.Controller/Providers/MetadataResult.cs
@@ -59,7 +59,7 @@ namespace MediaBrowser.Controller.Providers
         /// </summary>
         public void ResetPeople()
         {
-            if (People == null)
+            if (People is null)
             {
                 People = new List<PersonInfo>();
             }
@@ -83,7 +83,7 @@ namespace MediaBrowser.Controller.Providers
                 }
             }
 
-            if (userData == null)
+            if (userData is null)
             {
                 userData = new UserItemData()
                 {
diff --git a/MediaBrowser.Controller/Session/SessionInfo.cs b/MediaBrowser.Controller/Session/SessionInfo.cs
index b4520ae48f..d30472f224 100644
--- a/MediaBrowser.Controller/Session/SessionInfo.cs
+++ b/MediaBrowser.Controller/Session/SessionInfo.cs
@@ -64,7 +64,7 @@ namespace MediaBrowser.Controller.Session
         {
             get
             {
-                if (Capabilities == null)
+                if (Capabilities is null)
                 {
                     return Array.Empty<string>();
                 }
@@ -182,7 +182,7 @@ namespace MediaBrowser.Controller.Session
         {
             get
             {
-                if (Capabilities == null || !Capabilities.SupportsMediaControl)
+                if (Capabilities is null || !Capabilities.SupportsMediaControl)
                 {
                     return false;
                 }
@@ -204,7 +204,7 @@ namespace MediaBrowser.Controller.Session
         {
             get
             {
-                if (Capabilities == null || !Capabilities.SupportsMediaControl)
+                if (Capabilities is null || !Capabilities.SupportsMediaControl)
                 {
                     return false;
                 }
@@ -239,7 +239,7 @@ namespace MediaBrowser.Controller.Session
         /// </summary>
         /// <value>The supported commands.</value>
         public IReadOnlyList<GeneralCommandType> SupportedCommands
-            => Capabilities == null ? Array.Empty<GeneralCommandType>() : Capabilities.SupportedCommands;
+            => Capabilities is null ? Array.Empty<GeneralCommandType>() : Capabilities.SupportedCommands;
 
         public Tuple<ISessionController, bool> EnsureController<T>(Func<SessionInfo, ISessionController> factory)
         {
@@ -296,7 +296,7 @@ namespace MediaBrowser.Controller.Session
             {
                 _lastProgressInfo = progressInfo;
 
-                if (_progressTimer == null)
+                if (_progressTimer is null)
                 {
                     _progressTimer = new Timer(OnProgressTimerCallback, null, 1000, 1000);
                 }
@@ -315,7 +315,7 @@ namespace MediaBrowser.Controller.Session
             }
 
             var progressInfo = _lastProgressInfo;
-            if (progressInfo == null)
+            if (progressInfo is null)
             {
                 return;
             }
diff --git a/MediaBrowser.LocalMetadata/BaseXmlProvider.cs b/MediaBrowser.LocalMetadata/BaseXmlProvider.cs
index 9f8e921b4b..548ccee2d4 100644
--- a/MediaBrowser.LocalMetadata/BaseXmlProvider.cs
+++ b/MediaBrowser.LocalMetadata/BaseXmlProvider.cs
@@ -51,7 +51,7 @@ namespace MediaBrowser.LocalMetadata
 
             var file = GetXmlFile(info, directoryService);
 
-            if (file == null)
+            if (file is null)
             {
                 return Task.FromResult(result);
             }
@@ -98,7 +98,7 @@ namespace MediaBrowser.LocalMetadata
         {
             var file = GetXmlFile(new ItemInfo(item), directoryService);
 
-            if (file == null)
+            if (file is null)
             {
                 return false;
             }
diff --git a/MediaBrowser.LocalMetadata/Images/EpisodeLocalImageProvider.cs b/MediaBrowser.LocalMetadata/Images/EpisodeLocalImageProvider.cs
index dc13bf4f6d..a8e2946f18 100644
--- a/MediaBrowser.LocalMetadata/Images/EpisodeLocalImageProvider.cs
+++ b/MediaBrowser.LocalMetadata/Images/EpisodeLocalImageProvider.cs
@@ -32,7 +32,7 @@ namespace MediaBrowser.LocalMetadata.Images
         public IEnumerable<LocalImageInfo> GetImages(BaseItem item, IDirectoryService directoryService)
         {
             var parentPath = Path.GetDirectoryName(item.Path);
-            if (parentPath == null)
+            if (parentPath is null)
             {
                 return Enumerable.Empty<LocalImageInfo>();
             }
diff --git a/MediaBrowser.LocalMetadata/Images/LocalImageProvider.cs b/MediaBrowser.LocalMetadata/Images/LocalImageProvider.cs
index 70fd68129a..e92c4f83ea 100644
--- a/MediaBrowser.LocalMetadata/Images/LocalImageProvider.cs
+++ b/MediaBrowser.LocalMetadata/Images/LocalImageProvider.cs
@@ -453,7 +453,7 @@ namespace MediaBrowser.LocalMetadata.Images
         {
             var image = GetImage(files, name, prefix);
 
-            if (image == null)
+            if (image is null)
             {
                 return false;
             }
diff --git a/MediaBrowser.MediaEncoding/Attachments/AttachmentExtractor.cs b/MediaBrowser.MediaEncoding/Attachments/AttachmentExtractor.cs
index 22abf93ac3..0ee2bdd380 100644
--- a/MediaBrowser.MediaEncoding/Attachments/AttachmentExtractor.cs
+++ b/MediaBrowser.MediaEncoding/Attachments/AttachmentExtractor.cs
@@ -62,14 +62,14 @@ namespace MediaBrowser.MediaEncoding.Attachments
             var mediaSources = await _mediaSourceManager.GetPlaybackMediaSources(item, null, true, false, cancellationToken).ConfigureAwait(false);
             var mediaSource = mediaSources
                 .FirstOrDefault(i => string.Equals(i.Id, mediaSourceId, StringComparison.OrdinalIgnoreCase));
-            if (mediaSource == null)
+            if (mediaSource is null)
             {
                 throw new ResourceNotFoundException($"MediaSource {mediaSourceId} not found");
             }
 
             var mediaAttachment = mediaSource.MediaAttachments
                 .FirstOrDefault(i => i.Index == attachmentStreamIndex);
-            if (mediaAttachment == null)
+            if (mediaAttachment is null)
             {
                 throw new ResourceNotFoundException($"MediaSource {mediaSourceId} has no attachment with stream index {attachmentStreamIndex}");
             }
diff --git a/MediaBrowser.MediaEncoding/BdInfo/BdInfoExaminer.cs b/MediaBrowser.MediaEncoding/BdInfo/BdInfoExaminer.cs
index 6ebaa4fff0..bde3d2e847 100644
--- a/MediaBrowser.MediaEncoding/BdInfo/BdInfoExaminer.cs
+++ b/MediaBrowser.MediaEncoding/BdInfo/BdInfoExaminer.cs
@@ -48,7 +48,7 @@ namespace MediaBrowser.MediaEncoding.BdInfo
                 MediaStreams = Array.Empty<MediaStream>()
             };
 
-            if (playlist == null)
+            if (playlist is null)
             {
                 return outputStream;
             }
diff --git a/MediaBrowser.MediaEncoding/Encoder/EncoderValidator.cs b/MediaBrowser.MediaEncoding/Encoder/EncoderValidator.cs
index 8c8fc6b0f8..1ae3c976dc 100644
--- a/MediaBrowser.MediaEncoding/Encoder/EncoderValidator.cs
+++ b/MediaBrowser.MediaEncoding/Encoder/EncoderValidator.cs
@@ -190,7 +190,7 @@ namespace MediaBrowser.MediaEncoding.Encoder
 
             _logger.LogInformation("Found ffmpeg version {Version}", version != null ? version.ToString() : "unknown");
 
-            if (version == null)
+            if (version is null)
             {
                 if (MaxVersion != null) // Version is unknown
                 {
diff --git a/MediaBrowser.MediaEncoding/Encoder/MediaEncoder.cs b/MediaBrowser.MediaEncoding/Encoder/MediaEncoder.cs
index e50aa679a3..9abfb91027 100644
--- a/MediaBrowser.MediaEncoding/Encoder/MediaEncoder.cs
+++ b/MediaBrowser.MediaEncoding/Encoder/MediaEncoder.cs
@@ -531,7 +531,7 @@ namespace MediaBrowser.MediaEncoding.Encoder
                     throw;
                 }
 
-                if (result == null || (result.Streams == null && result.Format == null))
+                if (result is null || (result.Streams is null && result.Format is null))
                 {
                     throw new FfmpegException("ffprobe failed - streams and format are both null.");
                 }
diff --git a/MediaBrowser.MediaEncoding/Probing/ProbeResultNormalizer.cs b/MediaBrowser.MediaEncoding/Probing/ProbeResultNormalizer.cs
index 417f1520f7..d5e90e8558 100644
--- a/MediaBrowser.MediaEncoding/Probing/ProbeResultNormalizer.cs
+++ b/MediaBrowser.MediaEncoding/Probing/ProbeResultNormalizer.cs
@@ -156,7 +156,7 @@ namespace MediaBrowser.MediaEncoding.Probing
             else
             {
                 var artist = tags.GetFirstNotNullNorWhiteSpaceValue("artist");
-                info.Artists = artist == null
+                info.Artists = artist is null
                     ? Array.Empty<string>()
                     : SplitDistinctArtists(artist, _nameDelimiters, true).ToArray();
             }
@@ -989,7 +989,7 @@ namespace MediaBrowser.MediaEncoding.Probing
         /// <returns>System.String.</returns>
         private string GetDictionaryValue(IReadOnlyDictionary<string, string> tags, string key)
         {
-            if (tags == null)
+            if (tags is null)
             {
                 return null;
             }
@@ -1121,7 +1121,7 @@ namespace MediaBrowser.MediaEncoding.Probing
         {
             // Get the first info stream
             var stream = result.Streams?.FirstOrDefault(s => string.Equals(s.CodecType, "audio", StringComparison.OrdinalIgnoreCase));
-            if (stream == null)
+            if (stream is null)
             {
                 return;
             }
@@ -1144,7 +1144,7 @@ namespace MediaBrowser.MediaEncoding.Probing
 
         private int? GetBPSFromTags(MediaStreamInfo streamInfo)
         {
-            if (streamInfo?.Tags == null)
+            if (streamInfo?.Tags is null)
             {
                 return null;
             }
@@ -1161,7 +1161,7 @@ namespace MediaBrowser.MediaEncoding.Probing
 
         private double? GetRuntimeSecondsFromTags(MediaStreamInfo streamInfo)
         {
-            if (streamInfo?.Tags == null)
+            if (streamInfo?.Tags is null)
             {
                 return null;
             }
@@ -1177,7 +1177,7 @@ namespace MediaBrowser.MediaEncoding.Probing
 
         private long? GetNumberOfBytesFromTags(MediaStreamInfo streamInfo)
         {
-            if (streamInfo?.Tags == null)
+            if (streamInfo?.Tags is null)
             {
                 return null;
             }
@@ -1195,7 +1195,7 @@ namespace MediaBrowser.MediaEncoding.Probing
 
         private void SetSize(InternalMediaInfoResult data, MediaInfo info)
         {
-            if (data.Format == null)
+            if (data.Format is null)
             {
                 return;
             }
@@ -1510,7 +1510,7 @@ namespace MediaBrowser.MediaEncoding.Probing
         {
             var tags = data.Format?.Tags;
 
-            if (tags == null)
+            if (tags is null)
             {
                 return;
             }
diff --git a/MediaBrowser.Model/Dlna/AudioOptions.cs b/MediaBrowser.Model/Dlna/AudioOptions.cs
index 33755e7462..df4018fdd5 100644
--- a/MediaBrowser.Model/Dlna/AudioOptions.cs
+++ b/MediaBrowser.Model/Dlna/AudioOptions.cs
@@ -77,7 +77,7 @@ namespace MediaBrowser.Model.Dlna
                 return MaxBitrate;
             }
 
-            if (Profile == null)
+            if (Profile is null)
             {
                 return null;
             }
diff --git a/MediaBrowser.Model/Dlna/ContainerProfile.cs b/MediaBrowser.Model/Dlna/ContainerProfile.cs
index c6befdd857..9f7654a697 100644
--- a/MediaBrowser.Model/Dlna/ContainerProfile.cs
+++ b/MediaBrowser.Model/Dlna/ContainerProfile.cs
@@ -52,7 +52,7 @@ namespace MediaBrowser.Model.Dlna
 
         public static bool ContainsContainer(string[]? profileContainers, bool isNegativeList, string? inputContainer)
         {
-            if (profileContainers == null || profileContainers.Length == 0)
+            if (profileContainers is null || profileContainers.Length == 0)
             {
                 // Empty profiles always support all containers/codecs
                 return true;
diff --git a/MediaBrowser.Model/Dlna/StreamBuilder.cs b/MediaBrowser.Model/Dlna/StreamBuilder.cs
index 6e9b943f74..94112ab166 100644
--- a/MediaBrowser.Model/Dlna/StreamBuilder.cs
+++ b/MediaBrowser.Model/Dlna/StreamBuilder.cs
@@ -247,7 +247,7 @@ namespace MediaBrowser.Model.Dlna
 
             if (profile != null)
             {
-                var playProfiles = playProfile == null ? profile.DirectPlayProfiles : new[] { playProfile };
+                var playProfiles = playProfile is null ? profile.DirectPlayProfiles : new[] { playProfile };
                 foreach (var format in formats)
                 {
                     foreach (var directPlayProfile in playProfiles)
@@ -370,7 +370,7 @@ namespace MediaBrowser.Model.Dlna
             var directPlayProfile = options.Profile.DirectPlayProfiles
                 .FirstOrDefault(x => x.Type == DlnaProfileType.Audio && IsAudioDirectPlaySupported(x, item, audioStream));
 
-            if (directPlayProfile == null)
+            if (directPlayProfile is null)
             {
                 _logger.LogDebug(
                     "Profile: {0}, No audio direct play profiles found for {1} with codec {2}",
@@ -422,7 +422,7 @@ namespace MediaBrowser.Model.Dlna
 
         private static TranscodeReason GetTranscodeReasonsFromDirectPlayProfile(MediaSourceInfo item, MediaStream videoStream, MediaStream audioStream, IEnumerable<DirectPlayProfile> directPlayProfiles)
         {
-            var mediaType = videoStream == null ? DlnaProfileType.Audio : DlnaProfileType.Video;
+            var mediaType = videoStream is null ? DlnaProfileType.Audio : DlnaProfileType.Video;
 
             var containerSupported = false;
             var audioSupported = false;
@@ -436,9 +436,9 @@ namespace MediaBrowser.Model.Dlna
                 {
                     containerSupported = true;
 
-                    videoSupported = videoStream == null || profile.SupportsVideoCodec(videoStream.Codec);
+                    videoSupported = videoStream is null || profile.SupportsVideoCodec(videoStream.Codec);
 
-                    audioSupported = audioStream == null || profile.SupportsAudioCodec(audioStream.Codec);
+                    audioSupported = audioStream is null || profile.SupportsAudioCodec(audioStream.Codec);
 
                     if (videoSupported && audioSupported)
                     {
@@ -586,7 +586,7 @@ namespace MediaBrowser.Model.Dlna
             }
 
             // Collect candidate audio streams
-            ICollection<MediaStream> candidateAudioStreams = audioStream == null ? Array.Empty<MediaStream>() : new[] { audioStream };
+            ICollection<MediaStream> candidateAudioStreams = audioStream is null ? Array.Empty<MediaStream>() : new[] { audioStream };
             if (!options.AudioStreamIndex.HasValue || options.AudioStreamIndex < 0)
             {
                 if (audioStream?.IsDefault == true)
@@ -729,8 +729,8 @@ namespace MediaBrowser.Model.Dlna
             if (options.AllowVideoStreamCopy)
             {
                 // prefer direct copy profile
-                float videoFramerate = videoStream == null ? 0 : videoStream.AverageFrameRate ?? videoStream.AverageFrameRate ?? 0;
-                TransportStreamTimestamp? timestamp = videoStream == null ? TransportStreamTimestamp.None : item.Timestamp;
+                float videoFramerate = videoStream is null ? 0 : videoStream.AverageFrameRate ?? videoStream.AverageFrameRate ?? 0;
+                TransportStreamTimestamp? timestamp = videoStream is null ? TransportStreamTimestamp.None : item.Timestamp;
                 int? numAudioStreams = item.GetStreamCount(MediaStreamType.Audio);
                 int? numVideoStreams = item.GetStreamCount(MediaStreamType.Video);
 
@@ -832,13 +832,13 @@ namespace MediaBrowser.Model.Dlna
             double? videoLevel = videoStream?.Level;
             string videoProfile = videoStream?.Profile;
             string videoRangeType = videoStream?.VideoRangeType;
-            float videoFramerate = videoStream == null ? 0 : videoStream.AverageFrameRate ?? videoStream.AverageFrameRate ?? 0;
+            float videoFramerate = videoStream is null ? 0 : videoStream.AverageFrameRate ?? videoStream.AverageFrameRate ?? 0;
             bool? isAnamorphic = videoStream?.IsAnamorphic;
             bool? isInterlaced = videoStream?.IsInterlaced;
             string videoCodecTag = videoStream?.CodecTag;
             bool? isAvc = videoStream?.IsAVC;
 
-            TransportStreamTimestamp? timestamp = videoStream == null ? TransportStreamTimestamp.None : item.Timestamp;
+            TransportStreamTimestamp? timestamp = videoStream is null ? TransportStreamTimestamp.None : item.Timestamp;
             int? packetLength = videoStream?.PacketLength;
             int? refFrames = videoStream?.RefFrames;
 
@@ -870,12 +870,12 @@ namespace MediaBrowser.Model.Dlna
             int audioBitrate = GetAudioBitrate(options.GetMaxBitrate(false) ?? 0, playlistItem.TargetAudioCodec, audioStream, playlistItem);
             playlistItem.AudioBitrate = Math.Min(playlistItem.AudioBitrate ?? audioBitrate, audioBitrate);
 
-            bool? isSecondaryAudio = audioStream == null ? null : item.IsSecondaryAudio(audioStream);
-            int? inputAudioBitrate = audioStream == null ? null : audioStream.BitRate;
-            int? audioChannels = audioStream == null ? null : audioStream.Channels;
-            string audioProfile = audioStream == null ? null : audioStream.Profile;
-            int? inputAudioSampleRate = audioStream == null ? null : audioStream.SampleRate;
-            int? inputAudioBitDepth = audioStream == null ? null : audioStream.BitDepth;
+            bool? isSecondaryAudio = audioStream is null ? null : item.IsSecondaryAudio(audioStream);
+            int? inputAudioBitrate = audioStream is null ? null : audioStream.BitRate;
+            int? audioChannels = audioStream is null ? null : audioStream.Channels;
+            string audioProfile = audioStream is null ? null : audioStream.Profile;
+            int? inputAudioSampleRate = audioStream is null ? null : audioStream.SampleRate;
+            int? inputAudioBitDepth = audioStream is null ? null : audioStream.BitDepth;
 
             var appliedAudioConditions = options.Profile.CodecProfiles
                 .Where(i => i.Type == CodecType.VideoAudio &&
@@ -965,7 +965,7 @@ namespace MediaBrowser.Model.Dlna
             int defaultBitrate;
             int encoderAudioBitrateLimit = int.MaxValue;
 
-            if (audioStream == null)
+            if (audioStream is null)
             {
                 defaultBitrate = 192000;
             }
@@ -1080,13 +1080,13 @@ namespace MediaBrowser.Model.Dlna
             double? videoLevel = videoStream?.Level;
             string videoProfile = videoStream?.Profile;
             string videoRangeType = videoStream?.VideoRangeType;
-            float videoFramerate = videoStream == null ? 0 : videoStream.AverageFrameRate ?? videoStream.AverageFrameRate ?? 0;
+            float videoFramerate = videoStream is null ? 0 : videoStream.AverageFrameRate ?? videoStream.AverageFrameRate ?? 0;
             bool? isAnamorphic = videoStream?.IsAnamorphic;
             bool? isInterlaced = videoStream?.IsInterlaced;
             string videoCodecTag = videoStream?.CodecTag;
             bool? isAvc = videoStream?.IsAVC;
 
-            TransportStreamTimestamp? timestamp = videoStream == null ? TransportStreamTimestamp.None : mediaSource.Timestamp;
+            TransportStreamTimestamp? timestamp = videoStream is null ? TransportStreamTimestamp.None : mediaSource.Timestamp;
             int? packetLength = videoStream?.PacketLength;
             int? refFrames = videoStream?.RefFrames;
 
@@ -1177,7 +1177,7 @@ namespace MediaBrowser.Model.Dlna
                     if (candidateAudioStreams.Any())
                     {
                         selectedAudioStream = candidateAudioStreams.FirstOrDefault(audioStream => directPlayProfile.SupportsAudioCodec(audioStream.Codec));
-                        if (selectedAudioStream == null)
+                        if (selectedAudioStream is null)
                         {
                             directPlayProfileReasons |= TranscodeReason.AudioCodecNotSupported;
                         }
@@ -1501,12 +1501,12 @@ namespace MediaBrowser.Model.Dlna
                 throw new ArgumentException("DeviceId is required");
             }
 
-            if (options.Profile == null)
+            if (options.Profile is null)
             {
                 throw new ArgumentException("Profile is required");
             }
 
-            if (options.MediaSources == null)
+            if (options.MediaSources is null)
             {
                 throw new ArgumentException("MediaSources is required");
             }
diff --git a/MediaBrowser.Model/Dlna/StreamInfo.cs b/MediaBrowser.Model/Dlna/StreamInfo.cs
index 5cfa2e7e3c..b82f233ae2 100644
--- a/MediaBrowser.Model/Dlna/StreamInfo.cs
+++ b/MediaBrowser.Model/Dlna/StreamInfo.cs
@@ -215,7 +215,7 @@ namespace MediaBrowser.Model.Dlna
                 var stream = TargetVideoStream;
                 return MaxFramerate.HasValue && !IsDirectStream
                     ? MaxFramerate
-                    : stream == null ? null : stream.AverageFrameRate ?? stream.RealFrameRate;
+                    : stream is null ? null : stream.AverageFrameRate ?? stream.RealFrameRate;
             }
         }
 
@@ -460,7 +460,7 @@ namespace MediaBrowser.Model.Dlna
 
                 return !IsDirectStream
                     ? defaultValue
-                    : MediaSource == null ? defaultValue : MediaSource.Timestamp ?? TransportStreamTimestamp.None;
+                    : MediaSource is null ? defaultValue : MediaSource.Timestamp ?? TransportStreamTimestamp.None;
             }
         }
 
diff --git a/MediaBrowser.Model/Drawing/DrawingUtils.cs b/MediaBrowser.Model/Drawing/DrawingUtils.cs
index 5567927682..2040d26bbb 100644
--- a/MediaBrowser.Model/Drawing/DrawingUtils.cs
+++ b/MediaBrowser.Model/Drawing/DrawingUtils.cs
@@ -71,18 +71,18 @@ namespace MediaBrowser.Model.Drawing
             int? fillHeight)
         {
             // Return original size if input is invalid.
-            if ((fillWidth == null || fillWidth == 0)
-                && (fillHeight == null || fillHeight == 0))
+            if ((fillWidth is null || fillWidth == 0)
+                && (fillHeight is null || fillHeight == 0))
             {
                 return size;
             }
 
-            if (fillWidth == null || fillWidth == 0)
+            if (fillWidth is null || fillWidth == 0)
             {
                 fillWidth = 1;
             }
 
-            if (fillHeight == null || fillHeight == 0)
+            if (fillHeight is null || fillHeight == 0)
             {
                 fillHeight = 1;
             }
diff --git a/MediaBrowser.Model/Dto/MediaSourceInfo.cs b/MediaBrowser.Model/Dto/MediaSourceInfo.cs
index c348e83ae5..520832aeee 100644
--- a/MediaBrowser.Model/Dto/MediaSourceInfo.cs
+++ b/MediaBrowser.Model/Dto/MediaSourceInfo.cs
@@ -134,7 +134,7 @@ namespace MediaBrowser.Model.Dto
 
         public void InferTotalBitrate(bool force = false)
         {
-            if (MediaStreams == null)
+            if (MediaStreams is null)
             {
                 return;
             }
diff --git a/MediaBrowser.Model/Entities/ProviderIdsExtensions.cs b/MediaBrowser.Model/Entities/ProviderIdsExtensions.cs
index d3b8400f34..cf453d62cb 100644
--- a/MediaBrowser.Model/Entities/ProviderIdsExtensions.cs
+++ b/MediaBrowser.Model/Entities/ProviderIdsExtensions.cs
@@ -55,7 +55,7 @@ namespace MediaBrowser.Model.Entities
         {
             ArgumentNullException.ThrowIfNull(instance);
 
-            if (instance.ProviderIds == null)
+            if (instance.ProviderIds is null)
             {
                 id = null;
                 return false;
diff --git a/MediaBrowser.Model/Notifications/NotificationOptions.cs b/MediaBrowser.Model/Notifications/NotificationOptions.cs
index d1b5491bd1..8708d55f7d 100644
--- a/MediaBrowser.Model/Notifications/NotificationOptions.cs
+++ b/MediaBrowser.Model/Notifications/NotificationOptions.cs
@@ -93,7 +93,7 @@ namespace MediaBrowser.Model.Notifications
         {
             NotificationOption opt = GetOptions(notificationType);
 
-            return opt == null
+            return opt is null
                    || !opt.DisabledServices.Contains(service, StringComparison.OrdinalIgnoreCase);
         }
 
diff --git a/MediaBrowser.Model/Updates/VersionInfo.cs b/MediaBrowser.Model/Updates/VersionInfo.cs
index 03a540dde2..320199f984 100644
--- a/MediaBrowser.Model/Updates/VersionInfo.cs
+++ b/MediaBrowser.Model/Updates/VersionInfo.cs
@@ -17,7 +17,7 @@ namespace MediaBrowser.Model.Updates
         [JsonPropertyName("version")]
         public string Version
         {
-            get => _version == null ? string.Empty : _version.ToString();
+            get => _version is null ? string.Empty : _version.ToString();
 
             set => _version = SysVersion.Parse(value);
         }
diff --git a/MediaBrowser.Providers/BoxSets/BoxSetMetadataService.cs b/MediaBrowser.Providers/BoxSets/BoxSetMetadataService.cs
index cbbb343e5e..df9d15ec20 100644
--- a/MediaBrowser.Providers/BoxSets/BoxSetMetadataService.cs
+++ b/MediaBrowser.Providers/BoxSets/BoxSetMetadataService.cs
@@ -66,7 +66,7 @@ namespace MediaBrowser.Providers.BoxSets
             var libraryFolderIds = item.GetLibraryFolderIds();
 
             var itemLibraryFolderIds = item.LibraryFolderIds;
-            if (itemLibraryFolderIds == null || !libraryFolderIds.SequenceEqual(itemLibraryFolderIds))
+            if (itemLibraryFolderIds is null || !libraryFolderIds.SequenceEqual(itemLibraryFolderIds))
             {
                 item.LibraryFolderIds = libraryFolderIds;
                 updatedType |= ItemUpdateType.MetadataImport;
diff --git a/MediaBrowser.Providers/Manager/ItemImageProvider.cs b/MediaBrowser.Providers/Manager/ItemImageProvider.cs
index bbbbfad54a..23e9cbd34a 100644
--- a/MediaBrowser.Providers/Manager/ItemImageProvider.cs
+++ b/MediaBrowser.Providers/Manager/ItemImageProvider.cs
@@ -399,7 +399,7 @@ namespace MediaBrowser.Providers.Manager
                 {
                     var currentImage = item.GetImageInfo(type, 0);
 
-                    if (currentImage == null || !string.Equals(currentImage.Path, image.FileInfo.FullName, StringComparison.OrdinalIgnoreCase))
+                    if (currentImage is null || !string.Equals(currentImage.Path, image.FileInfo.FullName, StringComparison.OrdinalIgnoreCase))
                     {
                         item.SetImagePath(type, image.FileInfo);
                         changed = true;
@@ -471,7 +471,7 @@ namespace MediaBrowser.Providers.Manager
             CancellationToken cancellationToken)
         {
             var eligibleImages = images
-                .Where(i => i.Type == type && (i.Width == null || i.Width >= minWidth))
+                .Where(i => i.Type == type && (i.Width is null || i.Width >= minWidth))
                 .ToList();
 
             if (EnableImageStub(item) && eligibleImages.Count > 0)
@@ -539,7 +539,7 @@ namespace MediaBrowser.Providers.Manager
             if (item is IItemByName and not MusicArtist)
             {
                 var hasDualAccess = item as IHasDualAccess;
-                if (hasDualAccess == null || hasDualAccess.IsAccessedByName)
+                if (hasDualAccess is null || hasDualAccess.IsAccessedByName)
                 {
                     return true;
                 }
diff --git a/MediaBrowser.Providers/Manager/MetadataService.cs b/MediaBrowser.Providers/Manager/MetadataService.cs
index 0f3f1bdcba..8bd1b487dc 100644
--- a/MediaBrowser.Providers/Manager/MetadataService.cs
+++ b/MediaBrowser.Providers/Manager/MetadataService.cs
@@ -918,12 +918,12 @@ namespace MediaBrowser.Providers.Manager
             var source = sourceResult.Item;
             var target = targetResult.Item;
 
-            if (source == null)
+            if (source is null)
             {
                 throw new ArgumentException("Item cannot be null.", nameof(sourceResult));
             }
 
-            if (target == null)
+            if (target is null)
             {
                 throw new ArgumentException("Item cannot be null.", nameof(targetResult));
             }
@@ -1005,7 +1005,7 @@ namespace MediaBrowser.Providers.Manager
 
             if (!lockedFields.Contains(MetadataField.Cast))
             {
-                if (replaceData || targetResult.People == null || targetResult.People.Count == 0)
+                if (replaceData || targetResult.People is null || targetResult.People.Count == 0)
                 {
                     targetResult.People = sourceResult.People;
                 }
@@ -1178,7 +1178,7 @@ namespace MediaBrowser.Providers.Manager
         {
             if (source is Video sourceCast && target is Video targetCast)
             {
-                if (replaceData || targetCast.Video3DFormat == null)
+                if (replaceData || targetCast.Video3DFormat is null)
                 {
                     targetCast.Video3DFormat = sourceCast.Video3DFormat;
                 }
diff --git a/MediaBrowser.Providers/Manager/ProviderManager.cs b/MediaBrowser.Providers/Manager/ProviderManager.cs
index ac4dc1bc31..07d6b2b5eb 100644
--- a/MediaBrowser.Providers/Manager/ProviderManager.cs
+++ b/MediaBrowser.Providers/Manager/ProviderManager.cs
@@ -135,7 +135,7 @@ namespace MediaBrowser.Providers.Manager
             var service = _metadataServices.FirstOrDefault(current => current.CanRefreshPrimary(type));
             service ??= _metadataServices.FirstOrDefault(current => current.CanRefresh(item));
 
-            if (service == null)
+            if (service is null)
             {
                 _logger.LogError("Unable to find a metadata service for item of type {TypeName}", item.GetType().Name);
                 return Task.FromResult(ItemUpdateType.None);
@@ -660,7 +660,7 @@ namespace MediaBrowser.Providers.Manager
 
                 if (!includeDisabled)
                 {
-                    if (libraryOptions.MetadataSavers == null)
+                    if (libraryOptions.MetadataSavers is null)
                     {
                         if (options.DisabledMetadataSavers.Contains(saver.Name, StringComparison.OrdinalIgnoreCase))
                         {
@@ -725,7 +725,7 @@ namespace MediaBrowser.Providers.Manager
         {
             LibraryOptions libraryOptions;
 
-            if (referenceItem == null)
+            if (referenceItem is null)
             {
                 // Give it a dummy path just so that it looks like a file system item
                 var dummy = new TItemType
@@ -776,7 +776,7 @@ namespace MediaBrowser.Providers.Manager
                     {
                         var existingMatch = resultList.FirstOrDefault(i => i.ProviderIds.Any(p => string.Equals(result.GetProviderId(p.Key), p.Value, StringComparison.OrdinalIgnoreCase)));
 
-                        if (existingMatch == null)
+                        if (existingMatch is null)
                         {
                             resultList.Add(result);
                         }
@@ -831,7 +831,7 @@ namespace MediaBrowser.Providers.Manager
         {
             var provider = _metadataProviders.OfType<IRemoteSearchProvider>().FirstOrDefault(i => string.Equals(i.Name, providerName, StringComparison.OrdinalIgnoreCase));
 
-            if (provider == null)
+            if (provider is null)
             {
                 throw new ArgumentException("Search provider not found.");
             }
@@ -1002,7 +1002,7 @@ namespace MediaBrowser.Providers.Manager
                 try
                 {
                     var item = libraryManager.GetItemById(refreshItem.Item1);
-                    if (item == null)
+                    if (item is null)
                     {
                         continue;
                     }
diff --git a/MediaBrowser.Providers/MediaInfo/EmbeddedImageProvider.cs b/MediaBrowser.Providers/MediaInfo/EmbeddedImageProvider.cs
index d60d829def..a326de18f7 100644
--- a/MediaBrowser.Providers/MediaInfo/EmbeddedImageProvider.cs
+++ b/MediaBrowser.Providers/MediaInfo/EmbeddedImageProvider.cs
@@ -162,7 +162,7 @@ namespace MediaBrowser.Providers.MediaInfo
                     && imageFileNames.Any(name => stream.Comment.Contains(name, StringComparison.OrdinalIgnoreCase)));
 
             // Primary type only: default to first image if none found by label
-            if (imageStream == null)
+            if (imageStream is null)
             {
                 if (type == ImageType.Primary)
                 {
diff --git a/MediaBrowser.Providers/MediaInfo/FFProbeVideoInfo.cs b/MediaBrowser.Providers/MediaInfo/FFProbeVideoInfo.cs
index 7412a10d02..5bd0c90cea 100644
--- a/MediaBrowser.Providers/MediaInfo/FFProbeVideoInfo.cs
+++ b/MediaBrowser.Providers/MediaInfo/FFProbeVideoInfo.cs
@@ -195,7 +195,7 @@ namespace MediaBrowser.Providers.MediaInfo
                 //    .Replace("matroska", "mkv", StringComparison.OrdinalIgnoreCase);
 
                 // For DVDs this may not always be accurate, so don't set the runtime if the item already has one
-                var needToSetRuntime = video.VideoType != VideoType.Dvd || video.RunTimeTicks == null || video.RunTimeTicks.Value == 0;
+                var needToSetRuntime = video.VideoType != VideoType.Dvd || video.RunTimeTicks is null || video.RunTimeTicks.Value == 0;
 
                 if (needToSetRuntime)
                 {
@@ -572,7 +572,7 @@ namespace MediaBrowser.Providers.MediaInfo
             bool requirePerfectMatch;
             bool enabled;
 
-            if (libraryOptions.SubtitleDownloadLanguages == null)
+            if (libraryOptions.SubtitleDownloadLanguages is null)
             {
                 subtitleDownloadLanguages = subtitleOptions.DownloadLanguages;
                 skipIfEmbeddedSubtitlesPresent = subtitleOptions.SkipIfEmbeddedSubtitlesPresent;
diff --git a/MediaBrowser.Providers/MediaInfo/ProbeProvider.cs b/MediaBrowser.Providers/MediaInfo/ProbeProvider.cs
index 75f997a281..3bdc927964 100644
--- a/MediaBrowser.Providers/MediaInfo/ProbeProvider.cs
+++ b/MediaBrowser.Providers/MediaInfo/ProbeProvider.cs
@@ -108,7 +108,7 @@ namespace MediaBrowser.Providers.MediaInfo
         public bool HasChanged(BaseItem item, IDirectoryService directoryService)
         {
             var video = item as Video;
-            if (video == null || video.VideoType == VideoType.VideoFile || video.VideoType == VideoType.Iso)
+            if (video is null || video.VideoType == VideoType.VideoFile || video.VideoType == VideoType.Iso)
             {
                 var path = item.Path;
 
diff --git a/MediaBrowser.Providers/MediaInfo/SubtitleScheduledTask.cs b/MediaBrowser.Providers/MediaInfo/SubtitleScheduledTask.cs
index eb9071a52a..f21939d2a5 100644
--- a/MediaBrowser.Providers/MediaInfo/SubtitleScheduledTask.cs
+++ b/MediaBrowser.Providers/MediaInfo/SubtitleScheduledTask.cs
@@ -80,7 +80,7 @@ namespace MediaBrowser.Providers.MediaInfo
                 bool skipIfEmbeddedSubtitlesPresent;
                 bool skipIfAudioTrackMatches;
 
-                if (libraryOptions.SubtitleDownloadLanguages == null)
+                if (libraryOptions.SubtitleDownloadLanguages is null)
                 {
                     subtitleDownloadLanguages = options.DownloadLanguages;
                     skipIfEmbeddedSubtitlesPresent = options.SkipIfEmbeddedSubtitlesPresent;
@@ -172,7 +172,7 @@ namespace MediaBrowser.Providers.MediaInfo
             bool skipIfAudioTrackMatches;
             bool requirePerfectMatch;
 
-            if (libraryOptions.SubtitleDownloadLanguages == null)
+            if (libraryOptions.SubtitleDownloadLanguages is null)
             {
                 subtitleDownloadLanguages = options.DownloadLanguages;
                 skipIfEmbeddedSubtitlesPresent = options.SkipIfEmbeddedSubtitlesPresent;
diff --git a/MediaBrowser.Providers/MediaInfo/VideoImageProvider.cs b/MediaBrowser.Providers/MediaInfo/VideoImageProvider.cs
index d4bf629702..ba7ad40727 100644
--- a/MediaBrowser.Providers/MediaInfo/VideoImageProvider.cs
+++ b/MediaBrowser.Providers/MediaInfo/VideoImageProvider.cs
@@ -89,14 +89,14 @@ namespace MediaBrowser.Providers.MediaInfo
 
             var query = new MediaStreamQuery { ItemId = item.Id, Index = item.DefaultVideoStreamIndex };
             var videoStream = _mediaSourceManager.GetMediaStreams(query).FirstOrDefault();
-            if (videoStream == null)
+            if (videoStream is null)
             {
                 query.Type = MediaStreamType.Video;
                 query.Index = null;
                 videoStream = _mediaSourceManager.GetMediaStreams(query).FirstOrDefault();
             }
 
-            if (videoStream == null)
+            if (videoStream is null)
             {
                 _logger.LogInformation("Skipping image extraction: no video stream found for {Path}.", item.Path ?? string.Empty);
                 return new DynamicImageResponse { HasImage = false };
diff --git a/MediaBrowser.Providers/Plugins/Omdb/JsonOmdbNotAvailableInt32Converter.cs b/MediaBrowser.Providers/Plugins/Omdb/JsonOmdbNotAvailableInt32Converter.cs
index 8bfdc461e6..38379ae5d9 100644
--- a/MediaBrowser.Providers/Plugins/Omdb/JsonOmdbNotAvailableInt32Converter.cs
+++ b/MediaBrowser.Providers/Plugins/Omdb/JsonOmdbNotAvailableInt32Converter.cs
@@ -16,7 +16,7 @@ namespace MediaBrowser.Providers.Plugins.Omdb
             if (reader.TokenType == JsonTokenType.String)
             {
                 var str = reader.GetString();
-                if (str == null || str.Equals("N/A", StringComparison.OrdinalIgnoreCase))
+                if (str is null || str.Equals("N/A", StringComparison.OrdinalIgnoreCase))
                 {
                     return null;
                 }
diff --git a/MediaBrowser.Providers/Plugins/Omdb/OmdbProvider.cs b/MediaBrowser.Providers/Plugins/Omdb/OmdbProvider.cs
index 10077e5c89..d3e5c9ee0a 100644
--- a/MediaBrowser.Providers/Plugins/Omdb/OmdbProvider.cs
+++ b/MediaBrowser.Providers/Plugins/Omdb/OmdbProvider.cs
@@ -141,7 +141,7 @@ namespace MediaBrowser.Providers.Plugins.Omdb
 
             var seasonResult = await GetSeasonRootObject(seriesImdbId, seasonNumber, cancellationToken).ConfigureAwait(false);
 
-            if (seasonResult?.Episodes == null)
+            if (seasonResult?.Episodes is null)
             {
                 return false;
             }
@@ -161,7 +161,7 @@ namespace MediaBrowser.Providers.Plugins.Omdb
             }
 
             // finally, search by numbers
-            if (result == null)
+            if (result is null)
             {
                 foreach (var episode in seasonResult.Episodes)
                 {
@@ -173,7 +173,7 @@ namespace MediaBrowser.Providers.Plugins.Omdb
                 }
             }
 
-            if (result == null)
+            if (result is null)
             {
                 return false;
             }
diff --git a/MediaBrowser.Providers/Plugins/StudioImages/StudiosImageProvider.cs b/MediaBrowser.Providers/Plugins/StudioImages/StudiosImageProvider.cs
index ffbb338e84..4ff9e02477 100644
--- a/MediaBrowser.Providers/Plugins/StudioImages/StudiosImageProvider.cs
+++ b/MediaBrowser.Providers/Plugins/StudioImages/StudiosImageProvider.cs
@@ -70,7 +70,7 @@ namespace MediaBrowser.Providers.Plugins.StudioImages
 
             var imageInfo = GetImage(item, thumbsPath, ImageType.Thumb, "thumb");
 
-            if (imageInfo == null)
+            if (imageInfo is null)
             {
                 return Enumerable.Empty<RemoteImageInfo>();
             }
diff --git a/MediaBrowser.Providers/Plugins/Tmdb/BoxSets/TmdbBoxSetImageProvider.cs b/MediaBrowser.Providers/Plugins/Tmdb/BoxSets/TmdbBoxSetImageProvider.cs
index ef878e6707..20898d213d 100644
--- a/MediaBrowser.Providers/Plugins/Tmdb/BoxSets/TmdbBoxSetImageProvider.cs
+++ b/MediaBrowser.Providers/Plugins/Tmdb/BoxSets/TmdbBoxSetImageProvider.cs
@@ -72,7 +72,7 @@ namespace MediaBrowser.Providers.Plugins.Tmdb.BoxSets
             // TODO use image languages if All Languages isn't toggled, but there's currently no way to get that value in here
             var collection = await _tmdbClientManager.GetCollectionAsync(tmdbId, null, null, cancellationToken).ConfigureAwait(false);
 
-            if (collection?.Images == null)
+            if (collection?.Images is null)
             {
                 return Enumerable.Empty<RemoteImageInfo>();
             }
diff --git a/MediaBrowser.Providers/Plugins/Tmdb/BoxSets/TmdbBoxSetProvider.cs b/MediaBrowser.Providers/Plugins/Tmdb/BoxSets/TmdbBoxSetProvider.cs
index 90f2aa88f7..0a85832051 100644
--- a/MediaBrowser.Providers/Plugins/Tmdb/BoxSets/TmdbBoxSetProvider.cs
+++ b/MediaBrowser.Providers/Plugins/Tmdb/BoxSets/TmdbBoxSetProvider.cs
@@ -51,7 +51,7 @@ namespace MediaBrowser.Providers.Plugins.Tmdb.BoxSets
             {
                 var collection = await _tmdbClientManager.GetCollectionAsync(tmdbId, language, TmdbUtils.GetImageLanguagesParam(language), cancellationToken).ConfigureAwait(false);
 
-                if (collection == null)
+                if (collection is null)
                 {
                     return Enumerable.Empty<RemoteSearchResult>();
                 }
diff --git a/MediaBrowser.Providers/Plugins/Tmdb/Movies/TmdbMovieImageProvider.cs b/MediaBrowser.Providers/Plugins/Tmdb/Movies/TmdbMovieImageProvider.cs
index 1646a93d22..55e96f1fe5 100644
--- a/MediaBrowser.Providers/Plugins/Tmdb/Movies/TmdbMovieImageProvider.cs
+++ b/MediaBrowser.Providers/Plugins/Tmdb/Movies/TmdbMovieImageProvider.cs
@@ -90,7 +90,7 @@ namespace MediaBrowser.Providers.Plugins.Tmdb.Movies
                 .GetMovieAsync(movieTmdbId, null, null, cancellationToken)
                 .ConfigureAwait(false);
 
-            if (movie?.Images == null)
+            if (movie?.Images is null)
             {
                 return Enumerable.Empty<RemoteImageInfo>();
             }
diff --git a/MediaBrowser.Providers/Plugins/Tmdb/Movies/TmdbMovieProvider.cs b/MediaBrowser.Providers/Plugins/Tmdb/Movies/TmdbMovieProvider.cs
index dd2d5d97d9..4f9dfb3efd 100644
--- a/MediaBrowser.Providers/Plugins/Tmdb/Movies/TmdbMovieProvider.cs
+++ b/MediaBrowser.Providers/Plugins/Tmdb/Movies/TmdbMovieProvider.cs
@@ -177,7 +177,7 @@ namespace MediaBrowser.Providers.Plugins.Tmdb.Movies
                 .GetMovieAsync(Convert.ToInt32(tmdbId, CultureInfo.InvariantCulture), info.MetadataLanguage, TmdbUtils.GetImageLanguagesParam(info.MetadataLanguage), cancellationToken)
                 .ConfigureAwait(false);
 
-            if (movieResult == null)
+            if (movieResult is null)
             {
                 return new MetadataResult<Movie>();
             }
diff --git a/MediaBrowser.Providers/Plugins/Tmdb/People/TmdbPersonImageProvider.cs b/MediaBrowser.Providers/Plugins/Tmdb/People/TmdbPersonImageProvider.cs
index d7f5c99dd2..aa46d8f257 100644
--- a/MediaBrowser.Providers/Plugins/Tmdb/People/TmdbPersonImageProvider.cs
+++ b/MediaBrowser.Providers/Plugins/Tmdb/People/TmdbPersonImageProvider.cs
@@ -64,7 +64,7 @@ namespace MediaBrowser.Providers.Plugins.Tmdb.People
 
             var language = item.GetPreferredMetadataLanguage();
             var personResult = await _tmdbClientManager.GetPersonAsync(int.Parse(personTmdbId, CultureInfo.InvariantCulture), language, cancellationToken).ConfigureAwait(false);
-            if (personResult?.Images?.Profiles == null)
+            if (personResult?.Images?.Profiles is null)
             {
                 return Enumerable.Empty<RemoteImageInfo>();
             }
diff --git a/MediaBrowser.Providers/Plugins/Tmdb/TV/TmdbEpisodeImageProvider.cs b/MediaBrowser.Providers/Plugins/Tmdb/TV/TmdbEpisodeImageProvider.cs
index 943a3a75b2..127d41cc7d 100644
--- a/MediaBrowser.Providers/Plugins/Tmdb/TV/TmdbEpisodeImageProvider.cs
+++ b/MediaBrowser.Providers/Plugins/Tmdb/TV/TmdbEpisodeImageProvider.cs
@@ -84,7 +84,7 @@ namespace MediaBrowser.Providers.Plugins.Tmdb.TV
                 .ConfigureAwait(false);
 
             var stills = episodeResult?.Images?.Stills;
-            if (stills == null)
+            if (stills is null)
             {
                 return Enumerable.Empty<RemoteImageInfo>();
             }
diff --git a/MediaBrowser.Providers/Plugins/Tmdb/TV/TmdbEpisodeProvider.cs b/MediaBrowser.Providers/Plugins/Tmdb/TV/TmdbEpisodeProvider.cs
index e20284e6f8..d003017ffc 100644
--- a/MediaBrowser.Providers/Plugins/Tmdb/TV/TmdbEpisodeProvider.cs
+++ b/MediaBrowser.Providers/Plugins/Tmdb/TV/TmdbEpisodeProvider.cs
@@ -107,7 +107,7 @@ namespace MediaBrowser.Providers.Plugins.Tmdb.TV
                 .GetEpisodeAsync(seriesTmdbId, seasonNumber.Value, episodeNumber.Value, info.SeriesDisplayOrder, info.MetadataLanguage, TmdbUtils.GetImageLanguagesParam(info.MetadataLanguage), cancellationToken)
                 .ConfigureAwait(false);
 
-            if (episodeResult == null)
+            if (episodeResult is null)
             {
                 return metadataResult;
             }
diff --git a/MediaBrowser.Providers/Plugins/Tmdb/TV/TmdbSeasonImageProvider.cs b/MediaBrowser.Providers/Plugins/Tmdb/TV/TmdbSeasonImageProvider.cs
index da32ea4081..fda00537d5 100644
--- a/MediaBrowser.Providers/Plugins/Tmdb/TV/TmdbSeasonImageProvider.cs
+++ b/MediaBrowser.Providers/Plugins/Tmdb/TV/TmdbSeasonImageProvider.cs
@@ -62,7 +62,7 @@ namespace MediaBrowser.Providers.Plugins.Tmdb.TV
 
             var seriesTmdbId = Convert.ToInt32(series?.GetProviderId(MetadataProvider.Tmdb), CultureInfo.InvariantCulture);
 
-            if (seriesTmdbId <= 0 || season?.IndexNumber == null)
+            if (seriesTmdbId <= 0 || season?.IndexNumber is null)
             {
                 return Enumerable.Empty<RemoteImageInfo>();
             }
@@ -75,7 +75,7 @@ namespace MediaBrowser.Providers.Plugins.Tmdb.TV
                 .ConfigureAwait(false);
 
             var posters = seasonResult?.Images?.Posters;
-            if (posters == null)
+            if (posters is null)
             {
                 return Enumerable.Empty<RemoteImageInfo>();
             }
diff --git a/MediaBrowser.Providers/Plugins/Tmdb/TV/TmdbSeasonProvider.cs b/MediaBrowser.Providers/Plugins/Tmdb/TV/TmdbSeasonProvider.cs
index 2cf0f399e0..e38af68a63 100644
--- a/MediaBrowser.Providers/Plugins/Tmdb/TV/TmdbSeasonProvider.cs
+++ b/MediaBrowser.Providers/Plugins/Tmdb/TV/TmdbSeasonProvider.cs
@@ -55,7 +55,7 @@ namespace MediaBrowser.Providers.Plugins.Tmdb.TV
                 .GetSeasonAsync(Convert.ToInt32(seriesTmdbId, CultureInfo.InvariantCulture), seasonNumber.Value, info.MetadataLanguage, TmdbUtils.GetImageLanguagesParam(info.MetadataLanguage), cancellationToken)
                 .ConfigureAwait(false);
 
-            if (seasonResult == null)
+            if (seasonResult is null)
             {
                 return result;
             }
diff --git a/MediaBrowser.Providers/Plugins/Tmdb/TV/TmdbSeriesImageProvider.cs b/MediaBrowser.Providers/Plugins/Tmdb/TV/TmdbSeriesImageProvider.cs
index e96b680b48..9062f1b850 100644
--- a/MediaBrowser.Providers/Plugins/Tmdb/TV/TmdbSeriesImageProvider.cs
+++ b/MediaBrowser.Providers/Plugins/Tmdb/TV/TmdbSeriesImageProvider.cs
@@ -73,7 +73,7 @@ namespace MediaBrowser.Providers.Plugins.Tmdb.TV
                 .GetSeriesAsync(Convert.ToInt32(tmdbId, CultureInfo.InvariantCulture), null, null, cancellationToken)
                 .ConfigureAwait(false);
 
-            if (series?.Images == null)
+            if (series?.Images is null)
             {
                 return Enumerable.Empty<RemoteImageInfo>();
             }
diff --git a/MediaBrowser.Providers/Plugins/Tmdb/TmdbClientManager.cs b/MediaBrowser.Providers/Plugins/Tmdb/TmdbClientManager.cs
index 7d77334078..7f943a7b6f 100644
--- a/MediaBrowser.Providers/Plugins/Tmdb/TmdbClientManager.cs
+++ b/MediaBrowser.Providers/Plugins/Tmdb/TmdbClientManager.cs
@@ -174,7 +174,7 @@ namespace MediaBrowser.Providers.Plugins.Tmdb
                 string.Equals(displayOrder, "tv", StringComparison.Ordinal) ? TvGroupType.TV :
                 null;
 
-            if (groupType == null)
+            if (groupType is null)
             {
                 return null;
             }
@@ -190,7 +190,7 @@ namespace MediaBrowser.Providers.Plugins.Tmdb
             var series = await GetSeriesAsync(tvShowId, language, imageLanguages, cancellationToken).ConfigureAwait(false);
             var episodeGroupId = series?.EpisodeGroups.Results.Find(g => g.Type == groupType)?.Id;
 
-            if (episodeGroupId == null)
+            if (episodeGroupId is null)
             {
                 return null;
             }
diff --git a/MediaBrowser.Providers/TV/SeriesMetadataService.cs b/MediaBrowser.Providers/TV/SeriesMetadataService.cs
index c09b6d8138..a261d7cdb5 100644
--- a/MediaBrowser.Providers/TV/SeriesMetadataService.cs
+++ b/MediaBrowser.Providers/TV/SeriesMetadataService.cs
@@ -80,7 +80,7 @@ namespace MediaBrowser.Providers.TV
                 targetItem.Status = sourceItem.Status;
             }
 
-            if (replaceData || targetItem.AirDays == null || targetItem.AirDays.Length == 0)
+            if (replaceData || targetItem.AirDays is null || targetItem.AirDays.Length == 0)
             {
                 targetItem.AirDays = sourceItem.AirDays;
             }
@@ -201,7 +201,7 @@ namespace MediaBrowser.Providers.TV
                 var seasonNumber = episode.ParentIndexNumber >= 0 ? episode.ParentIndexNumber : null;
                 var existingSeason = seasons.FirstOrDefault(i => i.IndexNumber == seasonNumber);
 
-                if (existingSeason == null)
+                if (existingSeason is null)
                 {
                     var season = await CreateSeasonAsync(series, seasonNumber, cancellationToken).ConfigureAwait(false);
                     seasons.Add(season);
diff --git a/MediaBrowser.XbmcMetadata/Parsers/BaseNfoParser.cs b/MediaBrowser.XbmcMetadata/Parsers/BaseNfoParser.cs
index 9e197e737b..d31c07d144 100644
--- a/MediaBrowser.XbmcMetadata/Parsers/BaseNfoParser.cs
+++ b/MediaBrowser.XbmcMetadata/Parsers/BaseNfoParser.cs
@@ -85,7 +85,7 @@ namespace MediaBrowser.XbmcMetadata.Parsers
         /// <exception cref="ArgumentException"><c>metadataFile</c> is <c>null</c> or empty.</exception>
         public void Fetch(MetadataResult<T> item, string metadataFile, CancellationToken cancellationToken)
         {
-            if (item.Item == null)
+            if (item.Item is null)
             {
                 throw new ArgumentException("Item can't be null.", nameof(item));
             }
@@ -880,7 +880,7 @@ namespace MediaBrowser.XbmcMetadata.Parsers
 
                 var fileSystemMetadata = _directoryService.GetFile(val);
                 // non existing file returns null
-                if (fileSystemMetadata == null || !fileSystemMetadata.Exists)
+                if (fileSystemMetadata is null || !fileSystemMetadata.Exists)
                 {
                     Logger.LogWarning("Artwork file {Path} specified in nfo file for {ItemName} does not exist.", uri, itemResult.Item.Name);
                     return;
diff --git a/MediaBrowser.XbmcMetadata/Providers/BaseNfoProvider.cs b/MediaBrowser.XbmcMetadata/Providers/BaseNfoProvider.cs
index abd3e78d76..af581fc5df 100644
--- a/MediaBrowser.XbmcMetadata/Providers/BaseNfoProvider.cs
+++ b/MediaBrowser.XbmcMetadata/Providers/BaseNfoProvider.cs
@@ -33,7 +33,7 @@ namespace MediaBrowser.XbmcMetadata.Providers
 
             var file = GetXmlFile(info, directoryService);
 
-            if (file == null)
+            if (file is null)
             {
                 return Task.FromResult(result);
             }
@@ -64,7 +64,7 @@ namespace MediaBrowser.XbmcMetadata.Providers
         {
             var file = GetXmlFile(new ItemInfo(item), directoryService);
 
-            if (file == null)
+            if (file is null)
             {
                 return false;
             }
diff --git a/MediaBrowser.XbmcMetadata/Savers/BaseNfoSaver.cs b/MediaBrowser.XbmcMetadata/Savers/BaseNfoSaver.cs
index 740ca4c49b..9eae87b3b4 100644
--- a/MediaBrowser.XbmcMetadata/Savers/BaseNfoSaver.cs
+++ b/MediaBrowser.XbmcMetadata/Savers/BaseNfoSaver.cs
@@ -855,7 +855,7 @@ namespace MediaBrowser.XbmcMetadata.Savers
 
             var user = userManager.GetUserById(Guid.Parse(userId));
 
-            if (user == null)
+            if (user is null)
             {
                 return;
             }
diff --git a/src/Jellyfin.Extensions/AlphanumericComparator.cs b/src/Jellyfin.Extensions/AlphanumericComparator.cs
index 98a32d5b20..1b19752bb3 100644
--- a/src/Jellyfin.Extensions/AlphanumericComparator.cs
+++ b/src/Jellyfin.Extensions/AlphanumericComparator.cs
@@ -16,15 +16,15 @@ namespace Jellyfin.Extensions
         /// <returns>A signed integer that indicates the relative values of <c>x</c> and <c>y</c>.</returns>
         public static int CompareValues(string? s1, string? s2)
         {
-            if (s1 == null && s2 == null)
+            if (s1 is null && s2 is null)
             {
                 return 0;
             }
-            else if (s1 == null)
+            else if (s1 is null)
             {
                 return -1;
             }
-            else if (s2 == null)
+            else if (s2 is null)
             {
                 return 1;
             }
diff --git a/tests/Jellyfin.Model.Tests/Dlna/StreamBuilderTests.cs b/tests/Jellyfin.Model.Tests/Dlna/StreamBuilderTests.cs
index e1bd2fe0f3..a36c3b7c19 100644
--- a/tests/Jellyfin.Model.Tests/Dlna/StreamBuilderTests.cs
+++ b/tests/Jellyfin.Model.Tests/Dlna/StreamBuilderTests.cs
@@ -472,7 +472,7 @@ namespace Jellyfin.Model.Tests
                     }
                 }
             }
-            else if (playMethod == null)
+            else if (playMethod is null)
             {
                 Assert.Null(val.SubProtocol);
                 Assert.Equal("stream", uri.Filename);
diff --git a/tests/Jellyfin.Naming.Tests/Video/Format3DTests.cs b/tests/Jellyfin.Naming.Tests/Video/Format3DTests.cs
index 1762b91b9d..511a014a60 100644
--- a/tests/Jellyfin.Naming.Tests/Video/Format3DTests.cs
+++ b/tests/Jellyfin.Naming.Tests/Video/Format3DTests.cs
@@ -61,7 +61,7 @@ namespace Jellyfin.Naming.Tests.Video
 
             Assert.Equal(is3D, result.Is3D);
 
-            if (format3D == null)
+            if (format3D is null)
             {
                 Assert.Null(result?.Format3D);
             }
diff --git a/tests/Jellyfin.Naming.Tests/Video/MultiVersionTests.cs b/tests/Jellyfin.Naming.Tests/Video/MultiVersionTests.cs
index 79f2366b89..0ebcf5d81d 100644
--- a/tests/Jellyfin.Naming.Tests/Video/MultiVersionTests.cs
+++ b/tests/Jellyfin.Naming.Tests/Video/MultiVersionTests.cs
@@ -25,7 +25,7 @@ namespace Jellyfin.Naming.Tests.Video
                 files.Select(i => VideoResolver.Resolve(i, false, _namingOptions)).OfType<VideoFileInfo>().ToList(),
                 _namingOptions).ToList();
 
-            Assert.Single(result.Where(v => v.ExtraType == null));
+            Assert.Single(result.Where(v => v.ExtraType is null));
             Assert.Single(result.Where(v => v.ExtraType != null));
         }
 
@@ -44,7 +44,7 @@ namespace Jellyfin.Naming.Tests.Video
                 files.Select(i => VideoResolver.Resolve(i, false, _namingOptions)).OfType<VideoFileInfo>().ToList(),
                 _namingOptions).ToList();
 
-            Assert.Single(result.Where(v => v.ExtraType == null));
+            Assert.Single(result.Where(v => v.ExtraType is null));
             Assert.Single(result.Where(v => v.ExtraType != null));
             Assert.Equal(2, result[0].AlternateVersions.Count);
         }
diff --git a/tests/Jellyfin.Providers.Tests/Manager/MetadataServiceTests.cs b/tests/Jellyfin.Providers.Tests/Manager/MetadataServiceTests.cs
index 28b2e1d8f2..f94d6717bd 100644
--- a/tests/Jellyfin.Providers.Tests/Manager/MetadataServiceTests.cs
+++ b/tests/Jellyfin.Providers.Tests/Manager/MetadataServiceTests.cs
@@ -328,11 +328,11 @@ namespace Jellyfin.Providers.Tests.Manager
                 People = oldValue
             };
 
-            var lockedFields = lockField == null ? Array.Empty<MetadataField>() : new[] { (MetadataField)lockField };
+            var lockedFields = lockField is null ? Array.Empty<MetadataField>() : new[] { (MetadataField)lockField };
             MetadataService<Movie, MovieInfo>.MergeBaseItemData(source, target, lockedFields, replaceData, false);
 
             actualValue = target.People;
-            return newValue?.Equals(actualValue) ?? actualValue == null;
+            return newValue?.Equals(actualValue) ?? actualValue is null;
         }
 
         /// <summary>
@@ -367,12 +367,12 @@ namespace Jellyfin.Providers.Tests.Manager
             };
             property.SetValue(target.Item, oldValue);
 
-            var lockedFields = lockField == null ? Array.Empty<MetadataField>() : new[] { (MetadataField)lockField };
+            var lockedFields = lockField is null ? Array.Empty<MetadataField>() : new[] { (MetadataField)lockField };
             // generic type doesn't actually matter to call the static method, just has to be filled in
             MetadataService<TItemType, TIdType>.MergeBaseItemData(source, target, lockedFields, replaceData, false);
 
             actualValue = property.GetValue(target.Item);
-            return newValue?.Equals(actualValue) ?? actualValue == null;
+            return newValue?.Equals(actualValue) ?? actualValue is null;
         }
     }
 }
diff --git a/tests/Jellyfin.Providers.Tests/Manager/ProviderManagerTests.cs b/tests/Jellyfin.Providers.Tests/Manager/ProviderManagerTests.cs
index 725e295b9a..c1f2f5f711 100644
--- a/tests/Jellyfin.Providers.Tests/Manager/ProviderManagerTests.cs
+++ b/tests/Jellyfin.Providers.Tests/Manager/ProviderManagerTests.cs
@@ -430,7 +430,7 @@ namespace Jellyfin.Providers.Tests.Manager
                     .Returns((int)order);
             }
 
-            var provider = hasOrder == null
+            var provider = hasOrder is null
                 ? new Mock<TProviderType>(MockBehavior.Strict)
                 : hasOrder.As<TProviderType>();
             provider.Setup(p => p.Name)
@@ -473,12 +473,12 @@ namespace Jellyfin.Providers.Tests.Manager
             Mock<IHasOrder>? hasOrder = null;
             if (order != null)
             {
-                hasOrder = forcedProvider == null ? new Mock<IHasOrder>() : forcedProvider.As<IHasOrder>();
+                hasOrder = forcedProvider is null ? new Mock<IHasOrder>() : forcedProvider.As<IHasOrder>();
                 hasOrder.Setup(i => i.Order)
                     .Returns((int)order);
             }
 
-            var provider = hasOrder == null
+            var provider = hasOrder is null
                 ? new Mock<TProviderType>(MockBehavior.Strict)
                 : hasOrder.As<TProviderType>();
             provider.Setup(p => p.Name)
diff --git a/tests/Jellyfin.Providers.Tests/MediaInfo/EmbeddedImageProviderTests.cs b/tests/Jellyfin.Providers.Tests/MediaInfo/EmbeddedImageProviderTests.cs
index 9b80f0b948..6b2d9021c9 100644
--- a/tests/Jellyfin.Providers.Tests/MediaInfo/EmbeddedImageProviderTests.cs
+++ b/tests/Jellyfin.Providers.Tests/MediaInfo/EmbeddedImageProviderTests.cs
@@ -80,7 +80,7 @@ namespace Jellyfin.Providers.Tests.MediaInfo
 
             var actual = await embeddedImageProvider.GetImage(input, type, CancellationToken.None);
             Assert.NotNull(actual);
-            if (expectedFormat == null)
+            if (expectedFormat is null)
             {
                 Assert.False(actual.HasImage);
             }
@@ -131,7 +131,7 @@ namespace Jellyfin.Providers.Tests.MediaInfo
 
             var actual = await embeddedImageProvider.GetImage(input, type, CancellationToken.None);
             Assert.NotNull(actual);
-            if (expectedFormat == null)
+            if (expectedFormat is null)
             {
                 Assert.False(actual.HasImage);
             }
diff --git a/tests/Jellyfin.Server.Implementations.Tests/TypedBaseItem/BaseItemKindTests.cs b/tests/Jellyfin.Server.Implementations.Tests/TypedBaseItem/BaseItemKindTests.cs
index 31f33c6825..1bd51b2468 100644
--- a/tests/Jellyfin.Server.Implementations.Tests/TypedBaseItem/BaseItemKindTests.cs
+++ b/tests/Jellyfin.Server.Implementations.Tests/TypedBaseItem/BaseItemKindTests.cs
@@ -50,7 +50,7 @@ namespace Jellyfin.Server.Implementations.Tests.TypedBaseItem
 
         private static bool IsProjectAssemblyName(string? name)
         {
-            if (name == null)
+            if (name is null)
             {
                 return false;
             }