Hi, How can I get the php_ldap.dll and php_openssl.dll? What do I have to install? For example an LDAP server on my Apache server or something other extensions do I have to install? I used the following configuration to get regular authentication working first. Despite it is NOT working: require_once 'LdapAuthentication.php'; $wgAuth = new LdapAuthenticationPlugin(); $wgLDAPDomainNames = array( 'KAR' ); $wgLDAPServerNames = array( 'KAR' => 'aab.kar.local', ); $wgLDAPSearchStrings = array( 'KAR' => 'KAR\\USER-NAME', ); $wgLDAPEncryptionType = array( 'KAR' => 'ssl', ); $wgLDAPUseLocal = false; $wgMinimalPasswordLength = 1; System: MediaWiki 1.10 Apache/2.2.4 (Win32) - runs on WinXP PHP/5.2.3 MySQL 5.0.41 Microsoft Active Directory - runs on another server Regards, Gabor Reizer