title: IE11 and the .NET User.Identity.IsAuthenticated always returns false
body: <p>IE11 is unable to know when someone has logged in with Forms Authentication.</p>
  
  <p>This .NET command works in IE10 and in compatibility mode with IE11:<br />
  FormsAuthentication.SetAuthCookie("Test", false);</p>
  
  <p>IE11 returns false to User.Identity.IsAuthenticated. It does store the authentication cookies, but it does not load the User.Identity from the authentication cookies.</p>
  
  <p>Does anyone know if IE11 is dropping support for User.Identity or if I need to update IIS to identify IE11?</p>
  
  <p>Update: The problem is only with .NET 4.0 sites. Any .NET 3.51 or .NET 2.0 sites work fine.</p>
  
  <p>My solution was to install .NET 4.5 on the server<br />
  <a href="http://www.microsoft.com/en-us/download/details.aspx?id=30653" rel="nofollow">http://www.microsoft.com/en-us/download/details.aspx?id=30653</a></p>