title: DirectoryInfo.GetAccessControl method always fails
body: <p>I tried to get access information of 'current user' folder.
  But this code always return "method failed with unexpected error code 3, InvailedOperationException".</p>
  
  <p>Here is my code</p>
  
  <pre><code>string CurrentUserName = System.Security.Principal.WindowsIdentity.GetCurrent().Name;
  var Info = new DirectoryInfo("C:\\users\\"+ CurrentUserName);
  var Security = Info.GetAccessControl();
  </code></pre>