We are migration from ISA to Squid and have following problem: When i want to connect to one website without squid with IE6 browser i get an windows authenthication window, however with squid enabled i get following error: You do not have permission to view this directory or page using the credentials that you supplied because your Web browser is sending a WWW-Authenticate header field that the Web server is not configured to accept. Is there a ways to solve this problem. Thanks -- This is Unix-Land. In quiet nights, you can hear the Windows machines reboot.