Tag Archives: ntp

Windows Server 2008 R2 SP1 – How to Sync Time from External Time Source?

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Quick post to show how you can sync your domain controllers with external time source (time.windows.com or ntp.pool.org for example). By default, all machines in the domain will sync time from the domain controller which is the internal time server – if you have more than one DC then time will sync from the DC that holds the PDC emulator FSMO role. To check which DC is PDC emulator in your domain you need to run netdom /query fsmo command like so:

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Once PDC emulator role is established there is few commands we need to run in order for time to sync, these are (run on PDC emulator):

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