HTML5 Websocket HTTP Authentication failed; no valid credentials available

Question

I have implemented HTML5 Websocket in my MVC5 Application. I have implemented this web socket using web API. This code is working fine in my local environment. But it is giving me below error in my test environment.

"WebSocket connection to '' failed: HTTP Authentication failed; no valid credentials available."

My server Configuration is Windows server 2012 with IIS8

Please Help me out.

Answer 1

We have a few customers who had this issue only on servers which were windows 2012. It seems related to websockets being present and on. Enabling Cross Domain fixed it for us on those servers.

  // Turn cross domain on 
    var config = new HubConfiguration { EnableCrossDomain = true };

    // This will map out to http://localhost:50001/signalr by default
    app.MapHubs(config);