I am trying to provide our users a way to change file/folder permissions on a share on samba ROLE_STANDALONE server. ACL's are working fine but the problem is to get list of users and groups on samba server via Windows XP Professional (SP3). The share is already mounted: When I open 'Select users or groups' dialog and pressing 'Find now' button the Windows asks my Samba username/password pair. in the log.smbd i get a NT_STATUS_LOGON_FAILURE setting acls with smbcacls works fine.