I am running ISA for web proxy only (firewall service disabled). When my Wintel IE 5.5 and IE 6 clients go to a secure site and then get redirected out to a non secure site, I get an error page from ISA saying "HTTP 400 Bad Request - The data is invalid. (13)". The tech info on the error page says that "The gateway could not retrieve the requested page." We had no problems (like this) when running MS Proxy 2.0 *and* we have no problems (again, like this) when using Netscape. Any ideas? Thanks in advance for your help! Jason Goldman