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. We don't have kinit server. Later we install libpam-winbind, winbind ,libnss-winbind and samba on the client side. Edit nsswitch.conf --> passwd: compat winbind group: compat winbind shadow: compat winbind edit smb.conf -> security = *domain .......* edit /etc/pam.d/common-auth,/etc/pam.d/common-session, edit /etc/lightdm/lightdm.conf [SeatDefaults] allow-guest=false greeter-show-manual-login=true Problem: The problem was when try try logon on desktop login console we use domain\username and always get error "invalid password please try again" --> /var/log/auth.log Jul 1 12:29:10 samba-cliente lightdm: pam_winbind(lightdm:auth): user 'policia\gafranchello' granted access Jul 1 12:29:10 samba-cliente lightdm: pam_unix(lightdm:account): could not identify user (from getpwnam(gafranchello)) But if we use a user that it it is still created on the client desktop, and use the domain password, work Jul 1 12:31:26 samba-cliente lightdm: pam_winbind(lightdm:auth): getting password (0x00000000) Jul 1 12:31:30 samba-cliente lightdm: pam_winbind(lightdm:auth): user 'policia\jmperrote' granted access Jul 1 12:31:30 samba-cliente lightdm: pam_unix(lightdm-greeter:session): session closed for user lightdm Jul 1 12:31:30 samba-cliente lightdm: pam_kwallet(lightdm-greeter:session): pam_kwallet: pam_sm_close_session Jul 1 12:31:30 samba-cliente lightdm: pam_kwallet5(lightdm-greeter:session): pam_kwallet5: pam_sm_close_session Jul 1 12:31:30 samba-cliente lightdm: pam_kwallet(lightdm-greeter:setcred): pam_kwallet: pam_sm_setcred Jul 1 12:31:30 samba-cliente lightdm: pam_kwallet5(lightdm-greeter:setcred): pam_kwallet5: pam_sm_setcred Jul 1 12:31:30 samba-cliente lightdm: pam_unix(lightdm:session): session opened for user jmperrote by (uid=0) Jul 1 12:31:30 samba-cliente systemd-logind[635]: New session c4 of user jmperrote. Jul 1 12:31:30 samba-cliente lightdm: pam_kwallet(lightdm:session): (null): pam_sm_open_session Jul 1 12:31:30 samba-cliente lightdm: pam_kwallet(lightdm:session): pam_kwallet: open_session called without kwallet_key Jul 1 12:31:30 samba-cliente lightdm: pam_kwallet5(lightdm:session): (null): pam_sm_open_session Jul 1 12:31:30 samba-cliente lightdm: pam_kwallet5(lightdm:session): pam_kwallet5: open_session called without kwallet5_key Jul 1 12:31:34 samba-cliente gnome-keyring-daemon[5872]: The PKCS#11 component was already initialized Jul 1 12:31:34 samba-cliente gnome-keyring-daemon[5872]: The SSH agent was already initialized Jul 1 12:31:34 samba-cliente gnome-keyring-daemon[5872]: The Secret Service was already initialized Jul 1 12:31:35 samba-cliente polkitd(authority=local): Registered Authentication Agent for unix-session:c4 (system bus name :1.149 [/usr/lib/policykit-1-gnome/polkit-gnome-authentication-agent-1], object path /org/gnome/PolicyKit1/AuthenticationAgent, locale en_US.UTF-8) Regards.