David, We had some problems with Windows Update too. We solved with: acl Microsoft_Windows_Update dstdom_regex .download.microsoft.com .windowsupdate.com .windowsupdate.microsoft.com .microsoft.com http_access allow Microsoft_Windows_Update []´s, Denis -----Original Message----- From: David Curtis [mailto:DCurtis@xxxxxxxxxxxxx] Sent: Thursday, May 26, 2005 3:39 PM To: squid-users@xxxxxxxxxxxxxxx Subject: [squid-users] Microsoft Updates We are having problems running windows updates through our squid server. If we bypass squid we have not problems. Any idea where the problem might be. We are running Squid Cache: Version 2.5.STABLE1 on RH9. I see nothing in the access log that might indicate a problem. This email may contain information protected under the Family Educational Rights and Privacy Act (FERPA) or the Health Insurance Portability and Accountability Act (HIPAA). If this email contains confidential and/or privileged health or student information and you are not entitled to access such information under FERPA or HIPAA, federal regulations require that you destroy this email without reviewing it and you may not forward it to anyone.