My problem is getting the login control in a Visual Studio 2005 web application funtionality to work when using the computer name rather than localhost. If I put in a wrong password I get an error message "Your login attempt was not successful" so it is checking the database correctly but if I put in the right password it seems to reload the login page instead of forwarding to the default page. As I said this doesn't happen if I use localhost . If I run this same app on an XP pro IIS6 box I don't have any problems. Thanks for any help to track down this issue.