I have two domain controllers in Production and DR sites and there are 6 domain controllers in 6 different remotes sites. All domain controllers are Windows Server 2008 R2.
All are global catalog servers.
My predecessor has installed, Active Directory Certificate Services, in all domain controllers which is being used for wireless clients to authenticate via NPS.
Server 2008 is end of life and we are upgrading all domain controllers to Server 2012 R2 (Not going for Server 2016 or 2019 because we have licenses only for server 2012 r2)
So I, uninstall certificate services, demote Server 2008 R2 domain controller, remove from the domain, install Server 2012 R2, and promote as a new domain controller.
Now I have to install all the domain controllers this way.
Please let me know how to transfer or reinstall Certificate Services properly.