Hi, thanks for replying
Im using last version of sssd 1.13.4-1ubuntu1.5 on Xenial 16.04 Distro
DC's Samba : 2:4.5.8+dfsg-1
And yes im sure that the GPO im testing is linked to a specific OU with my test computer
in, and like i said it's well applying on Windows client,
with default rights in inheritance tab (Authenticated Users).
Oh and i can't figure out how to enable the gpo_child.log, it's stays empty.