[Samba] Domain demote fails

[Jochen Wezel - CompuMaster GmbH]

Hi together, 

Demoting from a Win-Server-Based Active Directory fails

root at srvf01:~# samba-tool domain demote --server windc-server -UAdministrator
Using srv15.lan.compumaster.de as partner server for the demotion
Password for [COMPUMASTER\Administrator]:
Desactivating inbound replication
Asking partner server windc-server to synchronize from us
Error while demoting, re-enabling inbound replication
ERROR(<class 'samba.drs_utils.drsException'>): Error while sending a DsReplicaSync for partion CN=Schema,CN=Configuration,DC=xxxxx - drsException: DsReplicaSync failed (1727, 'WERR_RPC_S_CALL_FAILED_DNE')
  File "/usr/local/samba/lib/python2.7/site-packages/samba/netcmd/domain.py", line 647, in run
    sendDsReplicaSync(drsuapiBind, drsuapi_handle, ntds_guid, str(part), drsuapi.DRSUAPI_DRS_WRIT_REP)
  File "/usr/local/samba/lib/python2.7/site-packages/samba/drs_utils.py", line 83, in sendDsReplicaSync
    raise drsException("DsReplicaSync failed %s" % estr)

Regards
Jochen