RODC Does Not Advertise As a Time Source in Server 2008

Solution

You can install a server running Windows Server 2008 and then either transfer the PDC emulator role to it or configure it as a GTIMESERV server for the domain.

In a forest root domain, the writable Windows Server 2008 domain controller that you configure as a GTIMESERV server must synchronize time from an external time source. In a child domain, the writable Windows Server 2008 domain controller that you configure as a GTIMESERV server can synchronize time from the domain hierarchy or from the same external time source that you configured for the forest root domain.

On a writable Windows Server 2008 domain controller in the forest root domain, run the following command:

W32tm /config /manualpeerlist: time_source /syncfromflags:MANUAL /reliable:YES /update

Where time_source is the name of an external time source.

On a writable Windows Server 2008 domain controller in a child domain, run the following command:

W32tm /config /syncfromflags:DOMHIER /reliable:YES /update

Then, run the following commands on the RODC to synchronize it with its time source and check its status:

w32tm /resync

w32tm /query /status /verbose