title: ASP.NET MVC 5 (VS2013 final) external login from Android fails (loginInfo is null)
body: <p>when I try to external login in my website using Android's default Browser as well as from Chrome Browser on Android - <code>await AuthenticationManager.GetExternalLoginInfoAsync()</code> always returns <code>null</code>.</p>
  
  <p>I'm checking both Google and Facebook's authentication. For both I get the usual stuff asking me for my username and password and then I am returned to my website for completion and there I always get null for <code>AuthenticationManager.GetExternalLoginInfoAsync()</code>.</p>
  
  <p>The very same code works fine locally in debug.</p>
  
  <p>Also, it used to worked fine up until two or three days earlier.</p>
  
  <p>what might be the problem and hopefully the solution?</p>