I mistakenly installed Windows Server 2012 Standard Edition in a virtual machine. A contractor arrived and promoted it to be the new domain controller. All was well until the next day I attempted to activate Windows and realized it was the wrong version (we have a volume license). The previous domain controller is still online, but the new one is the primary. There is also another server that is the backup domain controller.
How can I upgrade the new domain controller from 2012 Standard to 2012 Datacenter? I know I can upgrade Standard to Datacenter if not a DC using powershell. Can I demote the DC, upgrade it, and promote it back to a DC? Would that work? Thanks. Oh. All servers are on the same subnet. The DC is also running our DNS and DHCP services.