What happens to Windows Server 2012 Domain Controller when we Upgrade Domain & Forest Functional Level to Migrate to Windwos Server 2019

Seema Kanwal Gurmani 321 Reputation points
2021-03-24T18:16:46.793+00:00

Dear Community,

I want to migrate Windows Server 2019 Active Directory Role to Windows Server 2019 Server. What happens to Windows Server 2012 Domain Controller when we upgrade Domain & Forest Functional Level to Windwos Server 2019 as its pre-requisite to upgarde to Widnwos Server 2019 Domain Controller.

Will my windows Server 2012 DC will keep running after I upgarde the Domain & Functional Level to 2012?

Kindly help me out in this regard.

Windows Server 2019
Windows Server 2019
A Microsoft server operating system that supports enterprise-level management updated to data storage.
3,436 questions
Windows Server 2012
Windows Server 2012
A Microsoft server operating system that supports enterprise-level management, data storage, applications, and communications.
1,525 questions
0 comments
Accepted answer
  1. Dave Patrick 426K Reputation points MVP
    2021-03-25T18:57:07.17+00:00

    I'd just do them one at a time and confirm health is good in between doing them. Since you have multiple domain controllers you can take the old ones off line either before or after as needed. Having 2012 and 2019 domain controllers side by side long term is not a problem.

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

    0 comments

5 additional answers

Sort by: Most helpful
Most helpful Newest Oldest
  1. Dave Patrick 426K Reputation points MVP
    2021-04-06T13:29:29.85+00:00

    will window server 2012 on other site and windwos server 2019 keep on replicating information eventhough FRS replication ahs been upgraded to DFSR?

    Active directory replication is per domain. When you migrate FRS->DFSR all domain controllers for the domain are a part of the migration. Yes Server 2003 R2 and higher can use DFSR

    0 comments