That, in fact, turned out to be exactly what was wrong. Thank you very much for the help! -- Michael St. Laurent Hartwell Corporation -----Original Message----- From: Henrik Nordstrom [mailto:hno@xxxxxxxxxxxxxxx] Sent: Sunday, October 02, 2005 3:31 AM To: Michael St. Laurent Cc: 'squid-users@xxxxxxxxxxxxxxx' Subject: Re: A little trouble with ntlm_auth On Thu, 29 Sep 2005, Michael St. Laurent wrote: > auth_param basic program /usr/bin/ntlm_auth > --helper-protocol=squid-2.5-basic --require-membership-of=MERCURY\WebAccess You probably need to type that with a double \ MERCURY\\WebAccess Regards Henrik