Tuesday, May 21, 2013

Time sync with external NTP on windows server 2008 R2 DC

  1. Locate PDC - C:\>netdom /query fsmo
  2. Log in to 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.
NOTE: Make sure your firewall allows NTP out before you do this or your DC will not be able to contact outside NTP servers.

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