diff --git a/Jellyfin.Api/Controllers/ConfigurationController.cs b/Jellyfin.Api/Controllers/ConfigurationController.cs
index 2a1dce74d4..780a38aa81 100644
--- a/Jellyfin.Api/Controllers/ConfigurationController.cs
+++ b/Jellyfin.Api/Controllers/ConfigurationController.cs
@@ -53,15 +53,15 @@ namespace Jellyfin.Api.Controllers
         /// Updates application configuration.
         /// </summary>
         /// <param name="configuration">Configuration.</param>
-        /// <response code="200">Configuration updated.</response>
+        /// <response code="204">Configuration updated.</response>
         /// <returns>Update status.</returns>
         [HttpPost("Configuration")]
         [Authorize(Policy = Policies.RequiresElevation)]
-        [ProducesResponseType(StatusCodes.Status200OK)]
+        [ProducesResponseType(StatusCodes.Status204NoContent)]
         public ActionResult UpdateConfiguration([FromBody, BindRequired] ServerConfiguration configuration)
         {
             _configurationManager.ReplaceConfiguration(configuration);
-            return Ok();
+            return NoContent();
         }
 
         /// <summary>
@@ -81,17 +81,17 @@ namespace Jellyfin.Api.Controllers
         /// Updates named configuration.
         /// </summary>
         /// <param name="key">Configuration key.</param>
-        /// <response code="200">Named configuration updated.</response>
+        /// <response code="204">Named configuration updated.</response>
         /// <returns>Update status.</returns>
         [HttpPost("Configuration/{Key}")]
         [Authorize(Policy = Policies.RequiresElevation)]
-        [ProducesResponseType(StatusCodes.Status200OK)]
+        [ProducesResponseType(StatusCodes.Status204NoContent)]
         public async Task<ActionResult> UpdateNamedConfiguration([FromRoute] string key)
         {
             var configurationType = _configurationManager.GetConfigurationType(key);
             var configuration = await JsonSerializer.DeserializeAsync(Request.Body, configurationType).ConfigureAwait(false);
             _configurationManager.SaveConfiguration(key, configuration);
-            return Ok();
+            return NoContent();
         }
 
         /// <summary>
@@ -111,15 +111,15 @@ namespace Jellyfin.Api.Controllers
         /// Updates the path to the media encoder.
         /// </summary>
         /// <param name="mediaEncoderPath">Media encoder path form body.</param>
-        /// <response code="200">Media encoder path updated.</response>
+        /// <response code="204">Media encoder path updated.</response>
         /// <returns>Status.</returns>
         [HttpPost("MediaEncoder/Path")]
         [Authorize(Policy = Policies.FirstTimeSetupOrElevated)]
-        [ProducesResponseType(StatusCodes.Status200OK)]
+        [ProducesResponseType(StatusCodes.Status204NoContent)]
         public ActionResult UpdateMediaEncoderPath([FromForm, BindRequired] MediaEncoderPathDto mediaEncoderPath)
         {
             _mediaEncoder.UpdateEncoderPath(mediaEncoderPath.Path, mediaEncoderPath.PathType);
-            return Ok();
+            return NoContent();
         }
     }
 }
diff --git a/Jellyfin.Api/Controllers/DevicesController.cs b/Jellyfin.Api/Controllers/DevicesController.cs
index 1e75579033..1754b0cbda 100644
--- a/Jellyfin.Api/Controllers/DevicesController.cs
+++ b/Jellyfin.Api/Controllers/DevicesController.cs
@@ -105,12 +105,12 @@ namespace Jellyfin.Api.Controllers
         /// </summary>
         /// <param name="id">Device Id.</param>
         /// <param name="deviceOptions">Device Options.</param>
-        /// <response code="200">Device options updated.</response>
+        /// <response code="204">Device options updated.</response>
         /// <response code="404">Device not found.</response>
-        /// <returns>An <see cref="OkResult"/> on success, or a <see cref="NotFoundResult"/> if the device could not be found.</returns>
+        /// <returns>A <see cref="NoContentResult"/> on success, or a <see cref="NotFoundResult"/> if the device could not be found.</returns>
         [HttpPost("Options")]
         [Authorize(Policy = Policies.RequiresElevation)]
-        [ProducesResponseType(StatusCodes.Status200OK)]
+        [ProducesResponseType(StatusCodes.Status204NoContent)]
         [ProducesResponseType(StatusCodes.Status404NotFound)]
         public ActionResult UpdateDeviceOptions(
             [FromQuery, BindRequired] string id,
@@ -123,18 +123,18 @@ namespace Jellyfin.Api.Controllers
             }
 
             _deviceManager.UpdateDeviceOptions(id, deviceOptions);
-            return Ok();
+            return NoContent();
         }
 
         /// <summary>
         /// Deletes a device.
         /// </summary>
         /// <param name="id">Device Id.</param>
-        /// <response code="200">Device deleted.</response>
+        /// <response code="204">Device deleted.</response>
         /// <response code="404">Device not found.</response>
-        /// <returns>An <see cref="OkResult"/> on success, or a <see cref="NotFoundResult"/> if the device could not be found.</returns>
+        /// <returns>A <see cref="NoContentResult"/> on success, or a <see cref="NotFoundResult"/> if the device could not be found.</returns>
         [HttpDelete]
-        [ProducesResponseType(StatusCodes.Status200OK)]
+        [ProducesResponseType(StatusCodes.Status204NoContent)]
         public ActionResult DeleteDevice([FromQuery, BindRequired] string id)
         {
             var existingDevice = _deviceManager.GetDevice(id);
@@ -150,7 +150,7 @@ namespace Jellyfin.Api.Controllers
                 _sessionManager.Logout(session);
             }
 
-            return Ok();
+            return NoContent();
         }
     }
 }
diff --git a/Jellyfin.Api/Controllers/NotificationsController.cs b/Jellyfin.Api/Controllers/NotificationsController.cs
index 8d82ca10f1..5af1947562 100644
--- a/Jellyfin.Api/Controllers/NotificationsController.cs
+++ b/Jellyfin.Api/Controllers/NotificationsController.cs
@@ -99,10 +99,10 @@ namespace Jellyfin.Api.Controllers
         /// <param name="description">The description of the notification.</param>
         /// <param name="url">The URL of the notification.</param>
         /// <param name="level">The level of the notification.</param>
-        /// <response code="200">Notification sent.</response>
-        /// <returns>An <cref see="OkResult"/>.</returns>
+        /// <response code="204">Notification sent.</response>
+        /// <returns>A <cref see="NoContentResult"/>.</returns>
         [HttpPost("Admin")]
-        [ProducesResponseType(StatusCodes.Status200OK)]
+        [ProducesResponseType(StatusCodes.Status204NoContent)]
         public ActionResult CreateAdminNotification(
             [FromQuery] string name,
             [FromQuery] string description,
@@ -121,7 +121,7 @@ namespace Jellyfin.Api.Controllers
 
             _notificationManager.SendNotification(notification, CancellationToken.None);
 
-            return Ok();
+            return NoContent();
         }
 
         /// <summary>
@@ -129,15 +129,15 @@ namespace Jellyfin.Api.Controllers
         /// </summary>
         /// <param name="userId">The userID.</param>
         /// <param name="ids">A comma-separated list of the IDs of notifications which should be set as read.</param>
-        /// <response code="200">Notifications set as read.</response>
-        /// <returns>An <cref see="OkResult"/>.</returns>
+        /// <response code="204">Notifications set as read.</response>
+        /// <returns>A <cref see="NoContentResult"/>.</returns>
         [HttpPost("{UserID}/Read")]
-        [ProducesResponseType(StatusCodes.Status200OK)]
+        [ProducesResponseType(StatusCodes.Status204NoContent)]
         public ActionResult SetRead(
             [FromRoute] string userId,
             [FromQuery] string ids)
         {
-            return Ok();
+            return NoContent();
         }
 
         /// <summary>
@@ -145,15 +145,15 @@ namespace Jellyfin.Api.Controllers
         /// </summary>
         /// <param name="userId">The userID.</param>
         /// <param name="ids">A comma-separated list of the IDs of notifications which should be set as unread.</param>
-        /// <response code="200">Notifications set as unread.</response>
-        /// <returns>An <cref see="OkResult"/>.</returns>
+        /// <response code="204">Notifications set as unread.</response>
+        /// <returns>A <cref see="NoContentResult"/>.</returns>
         [HttpPost("{UserID}/Unread")]
-        [ProducesResponseType(StatusCodes.Status200OK)]
+        [ProducesResponseType(StatusCodes.Status204NoContent)]
         public ActionResult SetUnread(
             [FromRoute] string userId,
             [FromQuery] string ids)
         {
-            return Ok();
+            return NoContent();
         }
     }
 }
diff --git a/Jellyfin.Api/Controllers/PackageController.cs b/Jellyfin.Api/Controllers/PackageController.cs
index f37319c19e..8200f891c8 100644
--- a/Jellyfin.Api/Controllers/PackageController.cs
+++ b/Jellyfin.Api/Controllers/PackageController.cs
@@ -72,11 +72,11 @@ namespace Jellyfin.Api.Controllers
         /// <param name="name">Package name.</param>
         /// <param name="assemblyGuid">GUID of the associated assembly.</param>
         /// <param name="version">Optional version. Defaults to latest version.</param>
-        /// <response code="200">Package found.</response>
+        /// <response code="204">Package found.</response>
         /// <response code="404">Package not found.</response>
-        /// <returns>An <see cref="OkResult"/> on success, or a <see cref="NotFoundResult"/> if the package could not be found.</returns>
+        /// <returns>A <see cref="NoContentResult"/> on success, or a <see cref="NotFoundResult"/> if the package could not be found.</returns>
         [HttpPost("/Installed/{Name}")]
-        [ProducesResponseType(StatusCodes.Status200OK)]
+        [ProducesResponseType(StatusCodes.Status204NoContent)]
         [ProducesResponseType(StatusCodes.Status404NotFound)]
         [Authorize(Policy = Policies.RequiresElevation)]
         public async Task<ActionResult> InstallPackage(
@@ -98,23 +98,24 @@ namespace Jellyfin.Api.Controllers
 
             await _installationManager.InstallPackage(package).ConfigureAwait(false);
 
-            return Ok();
+            return NoContent();
         }
 
         /// <summary>
         /// Cancels a package installation.
         /// </summary>
         /// <param name="id">Installation Id.</param>
-        /// <response code="200">Installation cancelled.</response>
-        /// <returns>An <see cref="OkResult"/> on successfully cancelling a package installation.</returns>
+        /// <response code="204">Installation cancelled.</response>
+        /// <returns>A <see cref="NoContentResult"/> on successfully cancelling a package installation.</returns>
         [HttpDelete("/Installing/{id}")]
         [Authorize(Policy = Policies.RequiresElevation)]
+        [ProducesResponseType(StatusCodes.Status204NoContent)]
         public IActionResult CancelPackageInstallation(
             [FromRoute] [Required] string id)
         {
             _installationManager.CancelInstallation(new Guid(id));
 
-            return Ok();
+            return NoContent();
         }
     }
 }
diff --git a/Jellyfin.Api/Controllers/StartupController.cs b/Jellyfin.Api/Controllers/StartupController.cs
index 57a02e62a9..aae066e0e1 100644
--- a/Jellyfin.Api/Controllers/StartupController.cs
+++ b/Jellyfin.Api/Controllers/StartupController.cs
@@ -33,16 +33,16 @@ namespace Jellyfin.Api.Controllers
         /// <summary>
         /// Completes the startup wizard.
         /// </summary>
-        /// <response code="200">Startup wizard completed.</response>
-        /// <returns>An <see cref="OkResult"/> indicating success.</returns>
+        /// <response code="204">Startup wizard completed.</response>
+        /// <returns>A <see cref="NoContentResult"/> indicating success.</returns>
         [HttpPost("Complete")]
-        [ProducesResponseType(StatusCodes.Status200OK)]
+        [ProducesResponseType(StatusCodes.Status204NoContent)]
         public ActionResult CompleteWizard()
         {
             _config.Configuration.IsStartupWizardCompleted = true;
             _config.SetOptimalValues();
             _config.SaveConfiguration();
-            return Ok();
+            return NoContent();
         }
 
         /// <summary>
@@ -70,10 +70,10 @@ namespace Jellyfin.Api.Controllers
         /// <param name="uiCulture">The UI language culture.</param>
         /// <param name="metadataCountryCode">The metadata country code.</param>
         /// <param name="preferredMetadataLanguage">The preferred language for metadata.</param>
-        /// <response code="200">Configuration saved.</response>
-        /// <returns>An <see cref="OkResult"/> indicating success.</returns>
+        /// <response code="204">Configuration saved.</response>
+        /// <returns>A <see cref="NoContentResult"/> indicating success.</returns>
         [HttpPost("Configuration")]
-        [ProducesResponseType(StatusCodes.Status200OK)]
+        [ProducesResponseType(StatusCodes.Status204NoContent)]
         public ActionResult UpdateInitialConfiguration(
             [FromForm] string uiCulture,
             [FromForm] string metadataCountryCode,
@@ -83,7 +83,7 @@ namespace Jellyfin.Api.Controllers
             _config.Configuration.MetadataCountryCode = metadataCountryCode;
             _config.Configuration.PreferredMetadataLanguage = preferredMetadataLanguage;
             _config.SaveConfiguration();
-            return Ok();
+            return NoContent();
         }
 
         /// <summary>
@@ -91,16 +91,16 @@ namespace Jellyfin.Api.Controllers
         /// </summary>
         /// <param name="enableRemoteAccess">Enable remote access.</param>
         /// <param name="enableAutomaticPortMapping">Enable UPnP.</param>
-        /// <response code="200">Configuration saved.</response>
-        /// <returns>An <see cref="OkResult"/> indicating success.</returns>
+        /// <response code="204">Configuration saved.</response>
+        /// <returns>A <see cref="NoContentResult"/> indicating success.</returns>
         [HttpPost("RemoteAccess")]
-        [ProducesResponseType(StatusCodes.Status200OK)]
+        [ProducesResponseType(StatusCodes.Status204NoContent)]
         public ActionResult SetRemoteAccess([FromForm] bool enableRemoteAccess, [FromForm] bool enableAutomaticPortMapping)
         {
             _config.Configuration.EnableRemoteAccess = enableRemoteAccess;
             _config.Configuration.EnableUPnP = enableAutomaticPortMapping;
             _config.SaveConfiguration();
-            return Ok();
+            return NoContent();
         }
 
         /// <summary>
@@ -121,13 +121,13 @@ namespace Jellyfin.Api.Controllers
         /// Sets the user name and password.
         /// </summary>
         /// <param name="startupUserDto">The DTO containing username and password.</param>
-        /// <response code="200">Updated user name and password.</response>
+        /// <response code="204">Updated user name and password.</response>
         /// <returns>
         /// A <see cref="Task" /> that represents the asynchronous update operation.
-        /// The task result contains an <see cref="OkResult"/> indicating success.
+        /// The task result contains a <see cref="NoContentResult"/> indicating success.
         /// </returns>
         [HttpPost("User")]
-        [ProducesResponseType(StatusCodes.Status200OK)]
+        [ProducesResponseType(StatusCodes.Status204NoContent)]
         public async Task<ActionResult> UpdateUser([FromForm] StartupUserDto startupUserDto)
         {
             var user = _userManager.Users.First();
@@ -141,7 +141,7 @@ namespace Jellyfin.Api.Controllers
                 await _userManager.ChangePassword(user, startupUserDto.Password).ConfigureAwait(false);
             }
 
-            return Ok();
+            return NoContent();
         }
     }
 }