Hi Peter, Thx for the replies! Your names sounds familiar, were you on the Squid project like 18 yrs ago? My first Squid project was back then when I used it to develop a load balancer and I wonder if we corresponded back then? Anyway here is the results of the four commands you asked me to issue: 1) /u01/local/squid-3.3.10/helpers/basic_auth/LDAP/basic_ldap_auth -P -R -u cn -b "cn=Users,dc=mydomain,dc=com" -h 'ldap.mydomain.com' brig {my passwd} ERR Invalid credentials 2) /u01/local/squid-3.3.10/helpers/basic_auth/LDAP/basic_ldap_auth -d -b 'dc=mydomain,dc=com' -f 'sAMAccountName=%s' -D 'cn=squidauth,ou=Users,dc=mydomain,dc=com' -w 'squidauth passwd' -t 3 -H 'ldap://ldap.mydomain.com' brig {my passwd} basic_ldap_auth: WARNING, could not bind to binddn 'Invalid credentials' ERR Success 3) ldapsearch -LLL -H ldap://ldap.mydomain.com -x -D 'CN=squidauth,OU=Users,OU=IT, DC=mydomain,DC=com' -w 'squidauth passwd' -b 'DC=mydomain,DC=com' '(sAMAccountNa me=brig)' dn dn: CN=Brig,OU=Users,OU=IT,DC=mydomain,DC=com # refldap://ForestDnsZones.mydomain.com/DC=ForestDnsZones,DC=mydomain,DC=com # refldap://DomainDnsZones.mydomain.com/DC=DomainDnsZones,DC=mydomain,DC=com # refldap://mydomain.com/CN=Configuration,DC=mydomain,DC=com 4) ldapsearch -LLL -H ldap://ldap.mydomain.com -x -D 'CN=Brig,OU=Users,OU=IT,DC=mydomain,DC=com' -w 'my passwd' -b 'DC=mydomain,DC=com' '(sAMAccountName=brig)' dn dn: CN=Brig,OU=Users,OU=IT,DC=mydomain,DC=com # refldap://ForestDnsZones.mydomain.com/DC=ForestDnsZones,DC=mydomain,DC=com # refldap://DomainDnsZones.mydomain.com/DC=DomainDnsZones,DC=mydomain,DC=com # refldap://mydomain.com/CN=Configuration,DC=mydomain,DC=com While doing this I spent an hour on the AD server too looking for any kind of errors or anything and found NOTHING! This reminded me how much I hate working with M$ technology cuz somehow I feel if I was using OpenLdap I get the feeling I would see some kind of logging events that could help me figure this out . . . Thx again for you help! Brig -- View this message in context: http://squid-web-proxy-cache.1019090.n4.nabble.com/Cannot-get-basic-ldap-auth-to-work-with-AD-tp4663282p4663399.html Sent from the Squid - Users mailing list archive at Nabble.com.