title: HttpContext.Current.User.Identity.IsAuthenticated is false but ASP.NET_SessionId(cookie) is available
body: <p>Everything was working but suddenly broke. Sorry for the poor description: will add any details if needed.</p>
  
  <p>I am using a ASP.Net MVC SSO which uses Owin(OAuthAuthorizationServerProvider) and credentials verified on first call and cookies also created. But when client (ASP.net App)  HttpContext.Current.User.Identity.IsAuthenticate is still false and it is going back to SSO and user.Identity.IsAuthenticated which is coming from System.Web.HttpContext.Current.Request.GetOwinContext().</p>
  
  <p>Hope gave enough information. please let me know if anything else is needed.</p>