demtotion of 2008r2 and dns dlegation prompt

Question

so demoting 2008r2 server. promoted 2 newer servers week ago. FSMO roles transfered, dnds and everything else looks good.
do dcpromo on the 200842 server, and get to Remove DNS Delegation
and it asks for admin credentials fro server that hosts dnszone "com"
I was expecting to see my domain name there, but I do not.

so I just type in domainname\administrator for username, or is this some weird dns thing I need to fix?

Answer 1

Hard to say. If there are problems I'd check the remain domain controllers event logs, also dcdiag, repadmin tools can be helpful. If demotion does not go cleanly you can also perform metadata cleanup to remove it from active directory.
https://learn.microsoft.com/en-us/windows-server/identity/ad-ds/deploy/ad-ds-metadata-cleanup
https://techcommunity.microsoft.com/t5/itops-talk-blog/step-by-step-manually-removing-a-domain-controller-server/ba-p/280564

--please don't forget to Accept as answer if the reply is helpful--

Answer 2

we did notice a weird DNS setting, under ourdomain.com after sites, _tcp and _updt there is a "com" which has a host record for a server.

could that be what it is referring to?

if so, shouldn't cause any harm to continue, as the other 3 DCs would all still have that, correct?

need to talk to our devs to see why that server is there.

Answer 3

Shouldn't be an issue but put up some files to look at;

Dcdiag /v /c /d /e /s:%computername% >c:\dcdiag.log
repadmin /showrepl >C:\repl.txt
ipconfig /all > C:\dc1.txt
ipconfig /all > C:\dc2.txt
(etc. as other DC's exist)

then put unzipped text files up on OneDrive and share a link.

Answer 4

can I share that link with you privately? like via email or something?

Answer 5

Private messaging is coming to QnA but has not yet been implemented.