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I have a site with a DC I want to decommission, and a relatively new one (promo'd within the last two weeks). I'm having trouble demoting the old server, and in the process of trying to figure out why I'm running repadmin /replsum on a few of my DCs.

On most of them, I'm getting the error:

Experienced the following operational errors trying to retrieve replication information:

58 - c7908eb4-5ef4-46a7-b445-642b33ece726._msdcs.domain.com

I've looked around in DNS on the rest of my DCs looking for this listing, and I finally found it on my new DC mentioned above, and it refers to itself! So every other DC appears not to know about this DC, at least from a DNS perspective, but running repadmin /replsum on my new DC does not return any errors.

Why would this be happening, and what's the best way to correct it?

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  • Can you describe what DNS Server each DC is using (ipconfig /all on each server?) or at least one old and the new one?
    – Trondh
    Nov 6, 2014 at 19:35
  • Oh, hm, yes, that's probably an issue... the new server is using the to-be-decommissioned DC and a DC in our main site. The to-be-decomissioned DC is using two DCs from our main site.
    – NaOH
    Nov 6, 2014 at 19:38
  • As long as it doesn't point to itself (and the to-be decommissioned server works as it should) I doubt that's the source of the error.
    – Trondh
    Nov 6, 2014 at 19:41
  • Everything is prod here... I'm hesitant to demote it.
    – NaOH
    Nov 6, 2014 at 19:42
  • I would also encourate you to read thru this post regarding multiple copies of the DNS zone. There might be some quick ways to fix your issue: blogs.technet.com/b/askpfeplat/archive/2012/02/05/…
    – Trondh
    Nov 6, 2014 at 19:42

1 Answer 1

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Eventually they all just figured it out, I guess. I took a look a few days later and the relevant DNS entries existed and I'm no longer getting any errors running repadmin.

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