About the mismatch log output I cannot say a thing since I have not researched it. And about an option to add a HIT HEADER you can use the next script: https://gist.github.com/elico/ac58073812b8cad14ef154d8730e22cb Eliezer ---- Eliezer Croitoru Linux System Administrator Mobile: +972-5-28704261 Email: eliezer@xxxxxxxxxxxx -----Original Message----- From: squid-users [mailto:squid-users-bounces@xxxxxxxxxxxxxxxxxxxxx] On Behalf Of Omid Kosari Sent: Monday, July 18, 2016 2:39 PM To: squid-users@xxxxxxxxxxxxxxxxxxxxx Subject: Re: Windows Updates a Caching Stub zone, A windows updates store. Dear Eliezer, Unfortunately no success . I will describe what i did maybe i missed something . run the command perl -pi -e '$/=""; s/\r\n\r\n/\r\nX-SHMSCDN: HIT\r\n\r\n/;' /cache1/header/v1/* and verified that the text injected correctly squid config acl mshit rep_header X-SHMSCDN HIT clientside_tos 0x30 mshit but got the following popular log 2016/07/18 16:26:31.927 kid1| WARNING: mshit ACL is used in context without an HTTP response. Assuming mismatch. 2016/07/18 16:26:31.927 kid1| 28,3| Acl.cc(158) matches: checked: mshit = 0 One more thing . as i am not so familiar with perl , may i ask you to please edit it to ignore the files which already have the text ? Thanks -- View this message in context: http://squid-web-proxy-cache.1019090.n4.nabble.com/Windows-Updates-a-Caching-Stub-zone-A-windows-updates-store-tp4678454p4678557.html Sent from the Squid - Users mailing list archive at Nabble.com. _______________________________________________ squid-users mailing list squid-users@xxxxxxxxxxxxxxxxxxxxx http://lists.squid-cache.org/listinfo/squid-users _______________________________________________ squid-users mailing list squid-users@xxxxxxxxxxxxxxxxxxxxx http://lists.squid-cache.org/listinfo/squid-users