Fwd: help - problem joining samba 4 AD to an existing Windows AD Domain Server

[jmpatagonia]

Hello, we are using this document -->
https://wiki.samba.org/index.php/Joining_a_Samba_DC_to_an_Existing_Active_Directory
Everything is alright, but one of the last command "samba-tool domain join
cpern.edu.ar DC -k yes" starting working well but have and error and break:

Partition[DC=cpern,DC=edu,DC=ar] objects[43964/22106]
linked_values[1522/1116]

Partition[DC=cpern,DC=edu,DC=ar] objects[44162/22106]
linked_values[1525/1116]

Partition[DC=cpern,DC=edu,DC=ar] objects[44384/22106]
linked_values[1525/1116]

Partition[DC=cpern,DC=edu,DC=ar] objects[44591/22106]
linked_values[1525/1116]

Partition[DC=cpern,DC=edu,DC=ar] objects[44767/22106]
linked_values[1525/1116]

Partition[DC=cpern,DC=edu,DC=ar] objects[44981/22106]
linked_values[1525/1116]

Partition[DC=cpern,DC=edu,DC=ar] objects[45102/22106]
linked_values[1533/1116]

*Done with always replicated NC (base, config, schema)*

*Replicating DC=DomainDnsZones,DC=cpern,DC=edu,DC=ar*

*Join failed - cleaning up*

Deleted CN=DC0,OU=Domain Controllers,DC=cpern,DC=edu,DC=ar

Deleted CN=NTDS Settings,CN=DC0,CN=Servers,CN=
*Nombre-predeterminado-primer-sitio*
,CN=Sites,CN=Configuration,DC=cpern,DC=edu,DC=ar

Deleted
CN=DC0,CN=Servers,CN=Nombre-predeterminado-primer-sitio,CN=Sites,CN=Configuration,DC=cpern,DC=edu,DC=ar

ERROR(runtime): uncaught exception - (8420, 'WERR_DS_CANT_FIND_EXPECTED_NC')

File "/usr/lib/python3/dist-packages/samba/netcmd/__init__.py", line 186,
in _run

return self.run(*args, **kwargs)

File "/usr/lib/python3/dist-packages/samba/netcmd/domain.py", line 661, in
run

join_DC(logger=logger, server=server, creds=creds, lp=lp, domain=domain,

File "/usr/lib/python3/dist-packages/samba/join.py", line 1559, in join_DC

ctx.do_join()

File "/usr/lib/python3/dist-packages/samba/join.py", line 1449, in do_join

ctx.join_replicate()

File "/usr/lib/python3/dist-packages/samba/join.py", line 1006, in
join_replicate

repl.replicate(nc, source_dsa_invocation_id,

File "/usr/lib/python3/dist-packages/samba/drs_utils.py", line 338, in
replicate

(level, ctr) = self.drs.DsGetNCChanges(self.drs_handle, req_level, req)


Any idea ?


Regards