I have the premium edition, and I have a clean install. I have changed the flag to true, but I am still getting an error:
Server Error in Forum Application
An error has occurred while reading Authenticated User's, username from Windows Server.
Please check that are using a Windows Authenticated Login System and you are NOT browsing this site anonymously.
Please contact the forum administrator.
Support Error Code:- err_SQLServer_windowsAuthentication()_get_AUTH_USER
File Name:- functions_windows_authentication.asp
Error details:-