Hello we have Samba Version 4.3.11, we are trying to logon linux desktop clients on domain, we easy can join the client on the domain with net rpc join -S 10.11.37.3 -U xxxxx it is satisfactory. Later we use libpam-winbind, winbin and samba on the client side. nsswitch.conf smb.conf -> security = *domain* The problem was