Hi, I've updated from 1.5.2 to 1.6.1. After this, I found all groups beeing empty - so no users were there anymore. As result I started mapping LDAP groups to XWiki groups to let XWiki populate the memberships again - I was planning this anyway. For some reason XWiki is not able to get the groups members and I cannot understand why. Also it is not putting my user in the XWiki.AllGroup - still my groups do not have any member. This are the logs: DEBUG LDAP.XWikiLDAPAuthServiceImpl - Updating existing user with LDAP attribues located at cn=a12345,ou=associates,ou=users,o=wlgore DEBUG ldap.XWikiLDAPConfig - Ready to create user from LDAP with fields last_name=sn,first_name=givenName,fullname=fullName,email=mail,ldap_dn=dn DEBUG ldap.XWikiLDAPConfig - Groupmapping found: XWiki.XWikiAdminGroup cn=Admin,ou=XWiki,ou=Corp,ou=Links,ou=extranet_access,ou=groups,o=wlgore DEBUG ldap.XWikiLDAPConfig - Groupmapping found: XWiki.MSOEGroup cn=MSOE,ou=XWiki,ou=Corp,ou=Links,ou=extranet_access,ou=groups,o=wlgore DEBUG ldap.XWikiLDAPConfig - Groupmapping found: XWiki.MedicalFabricsAdmGroup cn=MedFabAdmin,ou=XWiki,ou=Corp,ou=Links,ou=extranet_access,ou=groups,o=wlgore DEBUG ldap.XWikiLDAPConfig - Groupmapping found: XWiki.MedicalFabricsGroup cn=MedFabUser,ou=XWiki,ou=Corp,ou=Links,ou=extranet_access,ou=groups,o=wlgore DEBUG LDAP.XWikiLDAPAuthServiceImpl - Updating group membership for the user: tzwitano DEBUG LDAP.XWikiLDAPAuthServiceImpl - The user belongs to following XWiki groups: DEBUG LDAP.XWikiLDAPAuthServiceImpl - XWiki.XWikiAllGroup DEBUG LDAP.XWikiLDAPAuthServiceImpl - All defined XWiki groups: DEBUG LDAP.XWikiLDAPAuthServiceImpl - XWiki.MSOEGroup DEBUG LDAP.XWikiLDAPAuthServiceImpl - XWiki.MedicalFabricsAdmGroup DEBUG LDAP.XWikiLDAPAuthServiceImpl - XWiki.MedicalFabricsGroup DEBUG LDAP.XWikiLDAPAuthServiceImpl - XWiki.TrillrAdmin DEBUG LDAP.XWikiLDAPAuthServiceImpl - XWiki.TrillrUser DEBUG LDAP.XWikiLDAPAuthServiceImpl - XWiki.XWikiAdminGroup DEBUG LDAP.XWikiLDAPAuthServiceImpl - XWiki.XWikiAllGroup DEBUG ldap.XWikiLDAPUtils - Found group [cn=MSOE,ou=XWiki,ou=Corp,ou=Links,ou=extranet_access,ou=groups,o=wlgore] members :{} DEBUG ldap.XWikiLDAPUtils - Found group [cn=Admin,ou=XWiki,ou=Corp,ou=Links,ou=extranet_access,ou=groups,o=wlgore] members :{} DEBUG ldap.XWikiLDAPUtils - Found group [cn=MedFabAdmin,ou=XWiki,ou=Corp,ou=Links,ou=extranet_access,ou=groups,o=wlgore] members :{} DEBUG ldap.XWikiLDAPUtils - Found group [cn=MedFabUser,ou=XWiki,ou=Corp,ou=Links,ou=extranet_access,ou=groups,o=wlgore] members :{} This is my config: #-# new LDAP authentication service xwiki.authentication.authclass=com.xpn.xwiki.user.impl.LDAP.XWikiLDAPAuthServiceImpl #-# Turn LDAP authentication on - otherwise only XWiki authentication #-# 0: disable #-# 1: enable xwiki.authentication.ldap=1 #-# Force to check password after LDAP connection #-# 0: disable #-# 1: enable xwiki.authentication.ldap.validate_password=0 #-# only members of the following group will be verified in the LDAP # otherwise only users that are found after searching starting from the base_DN #xwiki.authentication.ldap.user_group=o=wlgore #-# base DN for searches #xwiki.authentication.ldap.base_DN=o=wlgore #-# Specifies the LDAP attribute containing the identifier to be used as the XWiki name (default=cn) xwiki.authentication.ldap.UID_attr=uid #-# [SINCE 1.5M1, XWikiLDAPAuthServiceImpl] #-# Specifies the LDAP attribute containing the password to be used "when xwiki.authentication.ldap.validate_password" is set to 1 # xwiki.authentication.ldap.password_field=userPassword #-# [SINCE 1.5M1, XWikiLDAPAuthServiceImpl] #-# The potential LDAP groups classes. Separated by commas. xwiki.authentication.ldap.group_classes=group,groupOfNames,groupOfUniqueNames,dynamicGroup,dynamicGroupAux,groupWiseDistributionList,Top #xwiki.authentication.ldap.group_classes=groupOfNames,Top,groupOfNames #-# [SINCE 1.5M1, XWikiLDAPAuthServiceImpl] #-# The potential names of the LDAP groups fields containings the members. Separated by commas. xwiki.authentication.ldap.group_memberfields=member,equivalentToMe #-# retrieve the following fields from LDAP and store them in the XWiki user object (xwiki-attribute=ldap-attribute) #-# ldap_dn=dn -- dn is set by class, caches dn in XWiki.user object for faster access xwiki.authentication.ldap.fields_mapping=last_name=sn,first_name=givenName,fullname=fullName,email=mail,ldap_dn=dn #-# [SINCE 1.3M2, XWikiLDAPAuthServiceImpl] #-# on every login update the mapped attributes from LDAP to XWiki otherwise this happens only once when the XWiki account is created. xwiki.authentication.ldap.update_user=1 #-# [SINCE 1.3M2, XWikiLDAPAuthServiceImpl] #-# mapps XWiki groups to LDAP groups, separator is "|" xwiki.authentication.ldap.group_mapping=XWiki.XWikiAdminGroup=cn=Admin,ou=XWiki,ou=Corp,ou=Links,ou=extranet_access,ou=groups,o=wlgore|\ XWiki.MSOEGroup=cn=MSOE,ou=XWiki,ou=Corp,ou=Links,ou=extranet_access,ou=groups,o=wlgore|\ XWiki.MedicalFabricsAdmGroup=cn=MedFabAdmin,ou=XWiki,ou=Corp,ou=Links,ou=extranet_access,ou=groups,o=wlgore|\ XWiki.MedicalFabricsGroup=cn=MedFabUser,ou=XWiki,ou=Corp,ou=Links,ou=extranet_access,ou=groups,o=wlgore #-# [SINCE 1.3M2, XWikiLDAPAuthServiceImpl] #-# time in s after which the list of members in a group is refreshed from LDAP (default=3600*6) xwiki.authentication.ldap.groupcache_expiration=60 #-# [SINCE 1.3M2, XWikiLDAPAuthServiceImpl] #-# - create : synchronize group membership only when the user is first created #-# - always: synchronize on every login xwiki.authentication.ldap.mode_group_sync=always #-# [SINCE 1.3M2, XWikiLDAPAuthServiceImpl] #-# if ldap authentication fails for any reason, try XWiki DB authentication with the same credentials xwiki.authentication.ldap.trylocal=1 Thanks! Thomas