In 4.18.5 I getting an error on "samba-tool gpo dellink": ------------ samba-tool gpo listcontainers '{E3B6035C-E684-4E2A-B853-31A7BD7D2F2E}' -H /var/lib/samba/private/sam.ldb ldb_wrap open of secrets.ldb Container(s) using GPO {E3B6035C-E684-4E2A-B853-31A7BD7D2F2E} DN: DC=example,DC=com samba-tool gpo dellink DC=example,DC=com {E3B6035C-E684-4E2A-B853-31A7BD7D2F2E} -H /var/lib/samba/private/sam.ldb --username=<redacted> --password=<redacted> descriptor_prepare_commit: changes: num_registrations=0 descriptor_prepare_commit: changes: num_registered=0 descriptor_prepare_commit: changes: num_toplevel=0 descriptor_prepare_commit: changes: num_processed=0 descriptor_prepare_commit: objects: num_processed=0 descriptor_prepare_commit: objects: num_skipped=0 Deleted GPO link. lpcfg_load: refreshing parameters from /etc/samba/smb.conf GPO(s) linked to DN DC=example,DC=com GPO : {77B1F807-CABA-493E-AC6F-7377E5A466F5} Name : example_gpo_name Options : NONE <redacted lot of linked GPOs> ERROR(ldb): Cannot get information for GPOs - No such Base DN: CN={83789B30-2FAC-4ABD-A3B5-43C5E7AE6AC1},CN=Policies,CN=System,DC=example,DC=com File "/usr/lib/python3/dist-packages/samba/netcmd/gpo.py", line 165, in get_gpo_info msg = samdb.search(base=base_dn, scope=search_scope, ------------ And returncode: 255 Do note the output ends with "scope=search_scope," as if more output was expected... It looks like it crashes after the link is removed: ------------ samba-tool gpo listcontainers '{E3B6035C-E684-4E2A-B853-31A7BD7D2F2E}' -H /var/lib/samba/private/sam.ldb ldb_wrap open of secrets.ldb No Containers using GPO {E3B6035C-E684-4E2A-B853-31A7BD7D2F2E} ------------ I don't remember seeing this when we were testing last year in 4.15, which makes me think it was introduced after that time.