Trouble demoting DC with broken replication

Andreas Oster aoster at
Wed May 21 08:13:50 MDT 2014

Am 19.05.2014 19:09, schrieb Marc Muehlfeld:
> Hello Andreas,
> Am 19.05.2014 12:26, schrieb Andreas Oster:
>> Do you / does anybody have an idea how to get rid of those orphaned
>> entries ?
> Two weeks ago I wrote the 'Demote a DC' HowTo
> (
> While doing researches and testings for the HowTo, it turned out, that
> currently there seems to be no way (samba-tool or the usual Windows
> ways) to demote a lost DC and cleanup the metadata.
> I created a bug report about that:
> I guess the only way would be to manually find the stuff inside the AD
> and remove it manually via ldbedit. But I really would be afraid of that!
> An other idea I had, would be to temporary join a machine with the same
> name/IP as DC and then demote it with samba-tool. After that maybe less
> directory entries have to be removed (like the ophaned objectGUID
> entries). But this was just an idea and I wanted to try it in my test
> environment. But I think it would be a risky way and should be not
> recommend.
> I think this is a very serious problem/bug!
> Regards,
> Marc
Hello Marc,

I have just recognized, that I am able to see the orphaned NTDS entry
for the removed DC by using Sysinternals "Active Directory Explorer".

I get the following:



Unfortunately these entries are not deletable.

Do know if it is possible to remove those leftovers in a safe way ?

Thank you very much

best regards


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