Server 2008 Core RODC Requires a 2008 PDC
February 24th, 2008If you’re trying to install a Server 2008 RODC and you’re getting this error:
A read-only domain controller cannot be installed at this time because default domain groups could not be created. The error was: Unable to contact PDC in domain . … don’t forget that your PDC role must be held by a machine running Server [...]