Thx but that did not change anything. I first tried changing all single quotes to double quotes and had same effect. Then based on your comment about white space I removed all quotes and relied on white space and still no change. I have tried every solution I can find on the Internet w/o any luck. The only thing that sounds plausible at this point is the password issue Peter pointed out. One of the accounts that we use has an exclamation mark '!' in the password and the other account has a question mark '?' and a slash / in the password. I requested a new account with a password of only alphanumeric yet have not received word back yet on it. Do you concur that either of these non alphanumeric characters in the passwords could be the issue? ldapsearch seems to be ok with the passwords yet maybe they affect the basic_ldap_auth helper program? Thx! Brig -- View this message in context: http://squid-web-proxy-cache.1019090.n4.nabble.com/Cannot-get-basic-ldap-auth-to-work-with-AD-tp4663282p4663468.html Sent from the Squid - Users mailing list archive at Nabble.com.