Henrik The WSUS service is running under the local network service account. There is a configuration option to specify whether a proxy server is used and whether user credentials are required. I have selected this option and entered the correct details for the proxy and a valid domain user account. Using a proxy server worked fine under WSUS 2.0 and .Net 1.1. Regards Paul +++---+++---+++---+++---+++---+++---+++---+++---+++---+++---+++---+++ EML Consulting Services Pty Ltd Telephone: +61 3 9836 1999 417-431 Canterbury Road Facsimile: +61 3 9836 0517 SURREY HILLS, VICTORIA 3127 Email: Paul.Freeman@xxxxxxxxxx +++---+++---+++---+++---+++---+++---+++---+++---+++---+++---+++---+++ -----Original Message----- From: Henrik Nordstrom [mailto:henrik@xxxxxxxxxxxxxxxxxxx] Sent: Tuesday, May 08, 2007 9:52 AM To: Paul Freeman Cc: squid-users@xxxxxxxxxxxxxxx Subject: RE: Problems using Microsoft Windows SoftwareUpdateServices (WSUS) 3.0 with Squid tis 2007-05-08 klockan 09:13 +1000 skrev Paul Freeman: > I was wondering whether I can determine why the authentication from WSUS is > not working and whether there is anything that can be done about it rather > than having to allow access via CONNECT without auth for the WSUS server? Is the software performing the HTTP CONNECT requests running using a domain account, or a local account? Regards Henrik