I Was able to do by following wiki.squid-cache.org/squidfaq/windowsUpdate So far its been working great and also solved the problem with proxy auth. ------Original Message------ From: Muhammad Yousuf Khan To: squid-users Subject: cache windows update Sent: Jun 20, 2012 12:04 i would like to cache all windows update data i am not using WU server i just want to cache every update downloaded by windows 7 or XP and should be cached on my specified location and next time query for the same should be fulfilled with the existing cached file rather then downloading things directly from Microsoft websites. any help should be appreciated in this regard. Thanks, Sent from my BlackBerry® smartphone www.blackberry.com