Configuring the AuthenticationType from the WebUI will now work, just restart and NzbDrone will change the AuthenticationType on start.

IISExpress/AppServer/applicationhost.config

@@ -694,4 +694,14 @@
       </handlers>
     </system.webServer>
   </location>
+  <location path="NZBDrone">
+    <system.webServer>
+      <security>
+        <authentication>
+          <anonymousAuthentication enabled="true" />
+          <windowsAuthentication enabled="false" />
+        </authentication>
+      </security>
+    </system.webServer>
+  </location>
 </configuration>

NzbDrone/Model/AuthenticationType.cs

@@ -0,0 +1,13 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace NzbDrone.Model
+{
+    public enum AuthenticationType
+    {
+        Anonymous = 0,
+        Windows = 1
+    }
+}

NzbDrone/NzbDrone.csproj

@@ -86,6 +86,7 @@
   </ItemGroup>
   <ItemGroup>
     <Compile Include="Application.cs" />
+    <Compile Include="Model\AuthenticationType.cs" />
     <Compile Include="ProcessInfo.cs" />
     <Compile Include="Providers\ConsoleProvider.cs" />
     <Compile Include="Providers\DebuggerProvider.cs" />
@@ -132,6 +133,7 @@
       <Install>true</Install>
     </BootstrapperPackage>
   </ItemGroup>
+  <ItemGroup />
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
   <PropertyGroup>
     <PreBuildEvent>

NzbDrone/Providers/ConfigProvider.cs

@@ -6,6 +6,7 @@ using System.Xml.Linq;
 using System.Xml.XPath;
 using NLog;
 using NLog.Config;
+using NzbDrone.Model;
 
 namespace NzbDrone.Providers
 {
@@ -31,12 +32,12 @@ namespace NzbDrone.Providers
 
         public virtual int Port
         {
-            get { return GetValueInt("Port"); }
+            get { return GetValueInt("Port", 8989); }
         }
 
         public virtual bool LaunchBrowser
         {
-            get { return GetValueBoolean("LaunchBrowser"); }
+            get { return GetValueBoolean("LaunchBrowser", true); }
         }
 
         public virtual string AppDataDirectory
@@ -64,6 +65,12 @@ namespace NzbDrone.Providers
             get { return Path.Combine(IISFolder, "AppServer", "applicationhost.config"); }
         }
 
+        public virtual AuthenticationType AuthenticationType
+        {
+            get { return (AuthenticationType)GetValueInt("AuthenticationType", 0); }
+            set { SetValue("AuthenticationType", (int)value); }
+        }
+
         public virtual void ConfigureNlog()
         {
             LogManager.Configuration = new XmlLoggingConfiguration(
@@ -93,6 +100,25 @@ namespace NzbDrone.Providers
                              new XAttribute("bindingInformation", String.Format("*:{0}:", Port))
                     ));
 
+            //Update the authenticationTypes
+
+            var location = configXml.XPathSelectElement("configuration").Elements("location").Where(
+                    d => d.Attribute("path").Value.ToLowerInvariant() == "nzbdrone").First();
+
+
+            var authenticationTypes = location.XPathSelectElements("system.webServer/security/authentication").First().Descendants();
+
+            //Set all authentication types enabled to false
+            foreach (var child in authenticationTypes)
+            {
+                child.Attribute("enabled").Value = "false";
+            }
+
+            var configuredAuthType = String.Format("{0}Authentication", AuthenticationType.ToString()).ToLowerInvariant();
+
+            //Set the users authenticationType to true
+            authenticationTypes.Where(t => t.Name.ToString().ToLowerInvariant() == configuredAuthType).Single().Attribute("enabled").Value = "true";
+
             configXml.Save(configPath);
         }
 
@@ -107,42 +133,86 @@ namespace NzbDrone.Providers
             }
         }
 
-        public virtual void WriteDefaultConfig()
+        public virtual string GetValue(string key, object defaultValue, string parent = null)
         {
-            var xDoc = new XDocument(new XDeclaration("1.0", "utf-8", "yes"));
+            var xDoc = XDocument.Load(ConfigFile);
+            var config = xDoc.Descendants("Config").Single();
 
-            xDoc.Add(new XElement("Config",
-                                  new XElement("Port", 8989),
-                                  new XElement("LaunchBrowser", true)
-                         )
-                );
+            var parentContainer = config;
 
-            xDoc.Save(ConfigFile);
+            if (!String.IsNullOrEmpty(parent))
+            {
+                //Add the parent
+                if (config.Descendants(parent).Count() != 1)
+                {
+                    SetValue(key, defaultValue, parent);
+
+                    //Reload the configFile
+                    xDoc = XDocument.Load(ConfigFile);
+                    config = xDoc.Descendants("Config").Single();
+                }
+
+                parentContainer = config.Descendants(parent).Single();
             }
 
-        private string GetValue(string key, string parent = null)
+            var valueHolder = parentContainer.Descendants(key).ToList();
+
+            if (valueHolder.Count() == 1)
+                return valueHolder.First().Value;
+
+            //Save the value
+            SetValue(key, defaultValue, parent);
+
+            //return the default value
+            return defaultValue.ToString();
+        }
+
+        public virtual int GetValueInt(string key, int defaultValue, string parent = null)
+        {
+            return Convert.ToInt32(GetValue(key, defaultValue, parent));
+        }
+
+        public virtual bool GetValueBoolean(string key, bool defaultValue, string parent = null)
+        {
+            return Convert.ToBoolean(GetValue(key, defaultValue, parent));
+        }
+
+        public virtual void SetValue(string key, object value, string parent = null)
         {
             var xDoc = XDocument.Load(ConfigFile);
             var config = xDoc.Descendants("Config").Single();
 
             var parentContainer = config;
 
-            if (parent != null)
+            if (!String.IsNullOrEmpty(parent))
+            {
+                //Add the parent container if it doesn't already exist
+                if (config.Descendants(parent).Count() != 1)
+                {
+                    config.Add(new XElement(parent));
+                }
+
                 parentContainer = config.Descendants(parent).Single();
+            }
 
-            string value = parentContainer.Descendants(key).Single().Value;
+            var keyHolder = parentContainer.Descendants(key);
 
-            return value;
-        }
+            if (keyHolder.Count() != 1)
+                parentContainer.Add(new XElement(key, value));
 
-        private int GetValueInt(string key, string parent = null)
-        {
-            return Convert.ToInt32(GetValue(key, parent));
+            else
+                parentContainer.Descendants(key).Single().Value = value.ToString();
+
+            xDoc.Save(ConfigFile);
         }
 
-        private bool GetValueBoolean(string key, string parent = null)
+        public virtual void WriteDefaultConfig()
         {
-            return Convert.ToBoolean(GetValue(key, parent));
+            var xDoc = new XDocument(new XDeclaration("1.0", "utf-8", "yes"));
+
+            xDoc.Add(new XElement("Config"));
+
+            xDoc.Save(ConfigFile);
         }
     }
 }