On 07/11/2019 13:00, nathalie ramat wrote: > > My Dc is under linux - my version of linux is 5.2.0-3-amd64 No, your kernel is 5.2.0-3-amf64, you are running bullsye/sid You may find running this helps: apt-get install samba attr libpam-krb5 samba-vfs-modules You do not appear to have 'samba' installed. Rowland