I started looking into what updates have been applied. I last applied several hotfixes last week. Here's the stupid thing about this that resolved it. I ran dcdiag on the Windows server and found that the NETLOGON service was in a PAUSED state! How that happened I have no idea. Anyway, started that up, the problem disappeared. Here I am wasting time chasing this down and it's a service not running. Very odd for NETLOGON to do that, guess I have other work to do now to see why that happened... Anyway, I'm glad to have found the problem and all is well with Squid now... Geoff ______________________________ Geoff Varney Network Support Specialist Educational Service District 112 Ridgefield School District 360-619-1405 geoff.varney@xxxxxxxxxx -----Original Message----- From: Mark Elsen [mailto:mark.elsen@xxxxxxxxx] Sent: Tuesday, January 17, 2006 9:33 AM To: geoff.varney@xxxxxxxxxx Cc: squid-users@xxxxxxxxxxxxxxx Subject: Re: Squid NTLM Authentication broke > Hi, > I arrived at work today to find that the NTLM authentication on one of my > Squid servers has failed. It was working just fine up until now. Looking > at the logs (messages) it appears that it stopped working sometime around > 2:58 PM on Sunday, Jan. 15 (first error I see). Nothing was changed on the > Squid server or as far as I know on the Windows 2003 AD server. > >... - Are you sure ? Was a Service Pack installed , really check, on the Win2003 ? If you will need the most recent SAMBA release in cooperation with SQUID. M.