Old Server 2012 R2 - New Server 2022

Question

Windows server 2012 r2 version uses simple replication for sysvol and server 2022 uses DFSR.

Server 2022 is not able to syncronize the sysvol.

What is the procedure for adding a new domain controller where the other DC is a 2012 R2?

Answer 1

If FRS is still being used then the 2022 server will need to be removed and cleaned up.

https://learn.microsoft.com/en-us/troubleshoot/windows-server/identity/transfer-or-seize-operation-master-roles-in-ad-ds

then perform clean up to remove remnants.

Clean up Active Directory Domain Controller server metadata

Step-By-Step: Manually Removing A Domain Controller Server

The two prerequisites to introducing the first 2019 or 2022 domain controller are that domain functional level needs to be 2008 or higher and older sysvol FRS replication needs to have been migrated to DFSR

I'd use dcdiag / repadmin tools to verify health correcting all errors found before starting any operations. Then stand up the new 2019 or 2022, patch it fully, license it, join existing domain, add active directory domain services, promote it also making it a GC (recommended), transfer FSMO roles over (optional), transfer pdc emulator role (optional), use dcdiag / repadmin tools to again verify health, when all is good you can decommission / demote old one.

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