I have got a problem. I hope may be someone out there who will help me. When I enable Ask unauthenticated users for authentication in Outgoing Web Requests, I can't access any website or connect msn messenger on my ISA server computer while my internal client PCs do OK. I use Firewall Client on ISA server computer. The reason I require authentication is Download Security because when I install DownloadSecurity, webproxy and firewall services stop after a day or so and do not start. I think it is beacuse I allow anonymous access to ISA server. Any solution? Please Help