Hi All, I have an ISA 2004 connected via an ADSL Router. I have intermittent problem of ISA 2004 prompting for Username and password for Web Proxy client request. I have configured Integrated Windows only. I have not selected "ask for user credentials..." Problem when ISA is asking for Authentication it does not accept the username of my domain users, whereas if I provide administrator username and password it immediately authenticates and allows internet access. This is strange problem I have many such installations at my client places but no one has this kind of issue. I have revised the system policy and Access policy. It looks that there are no conflicts. Any ideas? Thanks & Regards, Rajnish Malik