Time synchronization is an important aspect for all computers on the network. 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.
1.First, locate your PDC Server. Open the command prompt and type: C:\>netdom /query fsmo
2.Log in to your PDC Server and open the command prompt.
3.Stop the W32Time service: C:\>net stop w32time
4.Configure the external time sources, type: C:\> w32tm /config /syncfromflags:manual /manualpeerlist:”0.pool.ntp.org, 1.pool.ntp.org, 2.pool.ntp.org”
5.Make your PDC a reliable time source for the clients. Type: C:\>w32tm /config /reliable:yes
6.Start the w32time service: C:\>net start w32time
7.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
8.Check the Event Viewer for any errors.
Tested on Windows Server 2008 R2 (Build 7600).
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