How to configure Windows Time Synchronization (w32tm.exe) on a Windows Server 2008 R2 PDC

This article explains how to configure your Windows Server 2008 R2 Active Directory Primary Domain Controller to syncronise time with an external time source.

Note: In an active directory, all member computers will sync time with the PDC, so you only need to setup an external time source on the PDC.

Open an elevated command prompt and type the following:
Note: this is for switzerland. More NTP names can be found here: http://www.pool.ntp.org/en/

w32tm /config /manualpeerlist:"0.ch.pool.ntp.org 1.ch.pool.ntp.org 2.ch.pool.ntp.org 3.ch.pool.ntp.org" /syncfromflags:manual /reliable:yes /update
net stop w32time
net start w32time
w32tm /config /update
w32tm /resync
w32tm /resync

You can run W32tm /resync on member computers to sync time with the PDC.

Links

Configure the Windows Time service on the PDC emulator in the Forest Root Domain

Synchronize time with external NTP server on Windows Server 2008 (R2)

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.

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