Thanks for your help Mick, this solved the problem. Also after seeing this I was able to figure out that in squid 3.0 you can use request_header_access in place of header_access. Thanks, Dean Weimer Network Administrator Orscheln Management Co -----Original Message----- From: Michael Graham [mailto:mgraham@xxxxxxxxx] Sent: Friday, May 02, 2008 10:37 AM To: squid-users@xxxxxxxxxxxxxxx Subject: Re: Unable to Access support.microsoft.com through Squid > Has anyone else ran into this issue, and found a solution to the problem? I do # Fix broken sites by removing Accept-Encoding header acl broken dstdomain support.microsoft.com acl broken dstdomain .digitalspy.co.uk header_access Accept-Encoding deny broken The problem is that sending Accept-Encoding causes these sites to reply with a header that it's not supposed to (Transfer-Encoding: chunked) Cheers, Mick