title: Unhandled Activation Error - Internal Server Error
body: <p>I wanted to sign in from Visual Studio 2015 Community into my Xamarin Account but I am getting the following error:</p>
  
  <pre><code>System.Net.WebException: The remote server returned an error: (500) Internal Server Error.
  at System.Net.HttpWebRequest.GetResponse()
  at MonoDevelop.Core.Web.RequestHelper.GetResponse(CancellationToken token) in C:\Users\builder\data\lanes\3062\0dd817c0\source\XamarinVS\src\Core\VisualStudio\ProxySupport\Nuget\RequestHelper.cs:line 141
  at Xamarin.VisualStudio.Proxy.VisualStudioWebRequestHelper.GetResponse(Func`1 createRequest, Action`1 prepareRequest, CancellationToken token) in C:\Users\builder\data\lanes\3062\0dd817c0\source\XamarinVS\src\Core\VisualStudio\ProxySupport\VisualStudioWebRequestHelper.cs:line 106
  at Xamarin.Components.Ide.Web.WebRequestHelper.GetResponse(Func`1 createRequest, Action`1 prepareRequest, CancellationToken token)
  at Xamarin.Components.Ide.SSO.Client.DoRequest(String endpoint, String method, String body, CancellationToken cancellationToken)
  at Xamarin.Components.Ide.SSO.Client.CreateToken(String email, String password, CancellationToken cancellationToken)
  at Xamarin.Components.Ide.SSO.Client.&lt;&gt;c__DisplayClass12_0.&lt;CreateTokenAsync&gt;b__0()
  at System.Threading.Tasks.Task`1.InnerInvoke()
  at System.Threading.Tasks.Task.Execute()
  </code></pre>
  
  <p>I am getting this error both on my Windows PC and Mac. On both there are no updates available. Some version info:</p>
  
  <ul>
  <li>Microsoft Visual Studio Community 2015 Version 14.0.25123.00 Update 2 - only on the PC</li>
  <li>Xamarin 4.0.3.214</li>
  <li>Xamarin.Android 6.0.3.5</li>
  <li>Xamarin.iOS 9.6.1.8</li>
  <li>Xamarin Studio Community 5.10.3 (build 51) - only on the Mac</li>
  <li>Xamarin.Mac 2.4.2.1 - only on the Mac</li>
  <li>Xamarin build lane: monodevelop-lion-cycle6-c6sr3</li>
  </ul>
  
  <p>Do I need to configure some special proxy?</p>