>On the cache.log of squid i can see a error message "could not bind to bindn" >server" "canÂt contact ldap server. > >Could someone help me to let it work? Probably not without seeing your config and knowing your AD setup. If you upgraded, has your ldap topology remained exactly the same? Were you binding anonymously previously as by default anon binds are disabled in AD. Are you binding to the same user DN as you were and does that user DN still exist? jlc