title: SignalR MVC 5 Websocket no valid Credentials
body: <p>i try to use SignalR in MVC Application. It works well but i get the following Error in the Chrome console</p>
  
  <pre><code> WebSocket connection to 'ws://localhost:18245/signalr/connect?transport=webSockets&amp;clientProtocol=1.4&amp;connectionToken=bNDGLnbSQThqY%2FSjo1bt
  8%2FL45Xs22BDs2VcY8O7HIkJdDaUJ4ftIc54av%2BELjr27ekHUiTYWgFMfG6o7RaZwhf
  fpXavzWQ1jvkaxGm5rI%2BWtK7j0g1eQC2aOYP366WmRQLXCiYJfsm4EbwX6T8n2Aw
  %3D%3D&amp;connectionData=%5B%7B%22name%22%3A%22importerhub%
  22%7D%5D&amp;tid=9' failed: HTTP Authentication failed; no valid credentials available 
  </code></pre>
  
  <p>The funny thing is that the jquery method i call from the Controller over the Hub works fine.</p>
  
  <p>jQuery:</p>
  
  <pre><code> $(function () {
              // Initialize the connection to the server
              var importerHub = $.connection.importerHub;
  
              // Preparing a client side function
              // called sendMessage that will be called from the server side
              importerHub.client.sendMessage = function (message) {
                  showOrUpdateSuccessMessage(message);
              };
              $.connection.hub.start();
          });
  </code></pre>
  
  <p>Controller:</p>
  
  <pre><code>var hubContext = GlobalHost.ConnectionManager.GetHubContext&lt;ImporterHub&gt;();
              hubContext.Clients.All.sendMessage("All operations complete");
  </code></pre>
  
  <p>I use .Net v4.5.1, SignalR v2.1.2.0 and IIS 8.5 with Windows Authentication.</p>
  
  <p>How can I fix this error?</p>