I have Exchange 2003 running on Windows 2003 Standard Edition. I have the "log in with forms" security enabled. For some reason, certain users can't log in to OWA. They will get the error "You could not be logged on to Outlook Web Access. Make sure your domain\user name and password are correct, and then try again." They are typing in their information correctly and we've tried logging in with the DOMAIN\USER standard. Some users work fine and others get the logon error.