I have I am running squid 2.6 stable 21 on Centos 5.5 the box is authenticated using winbind to the active directory domain Wbinfo -t tells me that the RPC call was successful and everything is working well, my ntlm SSO is working with chrome,ff,ie6,ie7 and ie8 on windows xp,windows vista My only problem is Windows 7 with IE8 (FF,Chrome Works 100%) When is user accesses normal http pages with Windows 7 and IE8 everything works but as soon as they try to access HTTPS sites the browser refuses to open those pages and just hangs.., I cant see anything funny is my logs. Just for testing when is disable proxy authencation (ntlm), the windows 7 machine loads HTTPS pages but refuses when its enabled. Also tried to change the NT LAN Manager setting Has anyone experienced this issue?