i have 3 computers that I am unable to get updates. If I try to manually connect I get an error message Error: Wrong answer http/1.1 403 Forbidden (The ISA server denied... If I then configure the proxy settings, I get the error: Error: Wrong answer 407 Proxy authentication required (The .... I have tried many versions of possible proxy setting entries. All 15 computers are set up in the same way, they are all connected to an SBS 2003 domain server running ISA 2004 firewall.