Hi, Great idea . I was looking for something like this for years and i was too lazy to start it myself ;) I am going to test your code in a multi thousand client ISP . It would more great if use the experiences of http://www.wsusoffline.net/ specially for your fetcher . It is GPL Also the ip address 13.107.4.50 is mainly used by microsoft for its download services . With services like https://www.virustotal.com/en-gb/ip-address/13.107.4.50/information/ we have found that other domains also used for update/download services . Maybe not bad if create special things for this ip address . Thanks in advance -- View this message in context: http://squid-web-proxy-cache.1019090.n4.nabble.com/Windows-Updates-a-Caching-Stub-zone-A-windows-updates-store-tp4678454p4678492.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