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.

Before you begin, don’t forget to open the default UDP 123 port (in- and outbound) on your (corporate) firewall.

    1. locate your PDC Server C:\>netdom /query fsmo
    2. Log in to your PDC Server
    3. C:\>net stop w32time
    4. C:\> w32tm /config /syncfromflags:manual /manualpeerlist:”0.pool.ntp.org, 1.pool.ntp.org, 2.pool.ntp.org”
    5. C:\>w32tm /config /reliable:yes
    6. C:\>net start w32time
    7. C:\>w32tm /query /configuration
    8. Check the Event Viewer for any errors.
Tested on Windows Server 2008 R2 (Build 7600).


1.w32tm /stripchart /computer:si.pool.ntp.org /samples:5 /dataonly
2.w32tm /config /manualpeerlist:si.pool.ntp.org,0×8, /syncfromflags:manual /update
3.w32tm /resync
4.w32tm /stripchart /computer:si.pool.ntp.org /samples:5 /dataonly

 

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