I was tasked with moving the domain controller to another server so the license for the Server Essentials 2012 could be re-purposed for a specific software program. This also removed the 25 user restriction limit of Server Essentials. I had to first virtualize the environment which is another story altogether. So here’s what I had to do:
- Install the Server 2012 Standard
- Install the Active Directory Role — the process is pretty straightforward
- Point DHCP server to the new Server Install IP for DNS.
- Verify a few clients have picked up the new IP over the next few days. It will take time to renew the IP leases. I didn’t uninstall the DNS role from the Essentials copy anyhow so this wasn’t mandatory for me.
- Open Active Directory Users and Computers on the new DC
- Right click and choose Operations Masters. Click change on each tab.
- Open Active Directory Domains and Trusts, right click the root node and click Operations Master. Click Change.
- Open cmd as admin and type regsvr32 schmmgmt.dll and push enter
- Type mmc and push enter
- File> Add/Remove snapin, Find Active Directory Schema snap-in and open it
- Right click the new snapin, click Change Active Directory Domain Controller…
- Click on your new DC and click OK. You’ll get a message, don’t worry about it.
- Right click again on the snapin and click Operations Master… Click Change
- Change grayed out? Make sure you are a schema admin member in AD Users/ Groups. Log off and back on.
- Run dcdiag /a to verify everything is ok and proceed to demoting your old DC.
This is a great tutorial as well: