I've successfully setup all workstations (Windows 98 /ME) to automatically logging onto ISA server when logging into the SBServer (2000). Except one workstation, whenever I open browser with a specific user, I'm always prompt to logon to Firewall (Network user name, password and domain). Only way to enter / surf the web is to enter Administrator name and password. But I do not have problems access emails via Outlook. I do not have the same problems when using the same user logon on another workstation and I do not have this problem when I use a different logon on the "problem" workstations. Please advise. Thanks