Time synchronization is an important aspect for all computers in a Windows domain. By default, the clients computers get their time from a Domain Controller and the Domain Controller gets his time from the domain’s PDC Operation Master. Therefore the PDC must synchronize his time from an external source. I usually use the servers listed at the NTP Pool Project website. Before you begin, don’t forget to open the default UDP 123 port (in and outbound) on your firewall.
- Locate your PDC Server. Open the command prompt and type: C:\>netdom /query fsmo
- Log in to your PDC Server and open the command prompt.
- Stop the W32Time service: C:\>net stop w32time
- Configure the external time sources, type: C:\> w32tm /config /syncfromflags:manual /manualpeerlist:pool.ntp.org
- Make your PDC a reliable time source for the clients. Type: C:\>w32tm /config /reliable:yes
- Start the w32time service: C:\>net start w32time
- The windows time service should begin synchronizing the time. You can check the external NTP servers in the time configuration by typing: C:\>w32tm /query /configuration
- Check the Event Viewer for any errors.
Time should now be synchronizing correctly.