Even after verifying that the IP of the router is correct (responds to ping for example) the user receives an error 404 "This server could not verify that you are authorized to access. Either you supplied the wrong credentials(e.g., bad password), or your browser doesn't understand how to supply the credentials required." when he tries to access the setup page.
This is known to be a source of trouble with IE 5.5 and later. To resolve it open a browser page, select Tools, Internet Options. Go to the Security tab. Click in Custom Levels. Scroll down to the bottom where you see User Authentication, Logon. Make sure to select "Prompt for username and password". Do that for the local network (Intranet) only unless you also experience problems with access to sites on the Internet.
by Bisucas edited by Lanik
last modified: 2005-06-22 00:14:46