Hi, tried it to, LDAP-Authentication worked on on instance (Windows Server 2003) Doesn't work on another (Linux) but i don't think its related to the LDAP problem we got here. The Logging information is: 09:18:12,953 [] [http-80-2] DEBUG util.ModuleUtils - Get module name for path /bin 09:18:12,953 [] [http-80-2] DEBUG util.ModuleUtils - Module name found: default 09:18:12,953 [] [http-80-2] DEBUG action.RequestProcessor - Processing a 'POST' for path '/loginsubmit/' 09:18:12,953 [] [http-80-2] DEBUG action.RequestProcessor - Looking for Action instance for class com.xpn.xwiki.web.LoginSubmitAction 09:18:13,083 [http://xwiki/bin/loginsubmit/XWiki/XWikiLogin] [http-80-2] DEBUG LDAP.XWikiLDAPAuthServiceImpl - Local LDAP authentication failed. 09:18:13,083 [http://xwiki/bin/loginsubmit/XWiki/XWikiLogin] [http-80-2] DEBUG LDAP.XWikiLDAPAuthServiceImpl - Trying authentication against XWiki DB Thanks Helmut -- View this message in context: http://n2.nabble.com/LDAP-Auth-problem-in-1.6-tp1303665p1311402.html Sent from the XWiki- Users mailing list archive at Nabble.com.