title: MVC 5 - Error on Facebook Login with business account
body: <p>I'm using the default OAuth 2.0 authentication on my MVC 5 application, and I use Facebook Login.</p>
  
  <p>With a personal account the login occurs without any errors, but when I login with the new facebook business account it doesn't login, throwing an exception because it can't get the external login info.</p>
  
  <pre><code>public async Task&lt;ActionResult&gt; ExternalLoginCallback(string returnUrl)
  {
      //Exception here
      var loginInfo = await AuthenticationManager.GetExternalLoginInfoAsync();
      if (loginInfo == null)
      {
          return RedirectToAction("Login");
      }
      [....]
  </code></pre>
  
  <p>Does any one uses this business account and had this error? Any leads how to solve it would be very much appreciated</p>