Using preferences – Control Panel Settings – Local Users and Groups does not appear to work for the Server 2012 built-in Administrator account. When I force the GPO I get the following error message in the application log.
The computer 'Administrator (built-in)' preference item in the '2012ServerLocalAct {1A18ACB2-A2FC-4BB3-81A9-7C4564132ED9}' Group Policy Object did not apply because it failed with error code '0x8007055b Cannot perform this operation on built-in accounts.' This error was suppressed.
I am able to make changes to the Guest account.
Any suggestions for Server 2012?