Checks to Add Win2019 DC with 2012

Question

Hi,

We need to add a 2019 DC to our domain and then remove the 2012 DC. What checks should be performed before doing it? We have already migrated FRS to DFSR. 2012 DC is also a DHCP Server.

Thanks.

Answer 1

That's possible. You could follow-up with this one.
https://support.microsoft.com/en-us/topic/kb5008380-authentication-updates-cve-2021-42287-9dafac11-e0d0-4cb8-959a-143bd0201041

as far as adding the new domain controller I don't see this as an issue.

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Answer 2

Source: Kerberos-Key-Distribution-Center

ID: 37

Can it be because of the certificate services removal on this server that I recently removed?

Answer 3

I will add the second DC after a few hours.

Answer 4

Hi there,

You can follow the below links to get the detailed steps to get this done.

Step-By-Step: Manually Removing A Domain Controller Server
https://techcommunity.microsoft.com/t5/itops-talk-blog/step-by-step-manually-removing-a-domain-controller-server/ba-p/280564

How to remove orphaned domains from Active Directory
https://learn.microsoft.com/en-us/troubleshoot/windows-server/identity/remove-orphaned-domains

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Answer 5

Added the second DC and everything seems working without errors.

Thanks DSPatrick.