How to fix "failed to verify whether schema master has completed a replication cycle after last reboot"

Question

Hello, I have Hyper-V installed on my Dell server. On this Hyper-V, I installed a virtual machine for Windows Server 2022. I want to add this virtual machine to an existing domain as a domain controller (Domain Windows Server 2016). I provided the domain name and the credentials for the Administrator, but I keep encountering this error: 'Failed to verify whether the schema master has completed a replication cycle after the last reboot.' I checked functionality level add it seems to be compatible with Server 2022. Could you please help with that matter?

Answer 1

Hello Krystian Sobala,

Thank you for posting in Q&A forum.

Based on the description, I understand your existing domain is 2016 domain (I mean the domain functional level is 2016), am I right?

If so, it seems you have more than one Domain Controller before you add Windows Server 2022 VM Domain Controller in this existing domain.

Maybe the AD replication issue caused the problem in this thread. You should check AD replication before you add this add Windows Server 2022 VM Domain Controller.

Please run commands below on PDC in the domain.

repadmin /showrepl >C:\rep1.txt

repadmin /replsum >C:\rep2.txt

repadmin /showrepl * /csv >c:\repsum.csv

Here is a similar thread with marked answer for your reference.
https://serverfault.com/questions/758812/dcpromo-prerequisites-for-active-directory-preparation-failed

Here is another link also with the similar error message for your reference.

https://techcommunity.microsoft.com/t5/ask-the-directory-services-team/troubleshooting-adprep-errors/ba-p/395869

I hope the information above is helpful.

If you have any questions or concerns, please feel free to let us know.

Best Regards,

Daisy Zhou

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