I'm using forms authentication, with the application pool set to classic I've enabled forms authentication and anonymous access, and I've disabled windows authentication. I'm still unable to read the LOGON_USER or IPrincipal.Identity.Name.
In IE9 I've set the user authentication to pass through automatic logon with the current user name and password.
Yet I still can't retrieve the current logged in user.
What could be missing? is this a breaking change in IIS7.5 or a change in IE9?
Note I can't just enable windows auth as this site is used externally as well as internally. Plus the client wants to be directed to the login page and not challenged with the user/password prompt.