Sometimes a domain controller (DC) just needs to be decommissioned for whatever reason, let’s say an upgrade, or corrupted VM and the roles are now seized.. nevertheless, moving the FSMO (Flexible single master operation) roles can be done via the UI, however if you want to speed things up and do it with PowerShell, here is how to that.

In my scenario, I am decommissioning my Hyper-V server which at the time was acting as the primary DC. Now that it is being decomm’ed I need to transfer the FSMO roles to another DC. The destination DC is “DC01” in this case.

Move-ADDirectoryServerOperationMasterRole -Identity "DESTINATION DC" -OperationMasterRole 0,1,2,3,4

You have the option here to specify a numerical value or specifying the role itself. See below for the number assoicated to each roles. You could input each role, or as I did, just input the number(s).

PDCEmulator or 0
RIDMaster or 1
InfrastructureMaster or 2
SchemaMaster or 3
DomainNamingMaster or 4

To verify the FSMO roles have been transferred, run the netdom query fsmo command.

netdom query fsmo