Tuesday, January 28, 2014

Update the Windows Time Service settings of domain member servers in Hyper-V virtual machine

Normally, Windows Time service of domain member servers synchronizes a domain controller in domain environment. However, domain member servers are under virtual machine environment (Hyper-V). Virtual machines synchronize them time with the Hyper-V host server because the "Time synchronization" of "Integration Services" is enabled in virtual machines.

To verify the setting, we can log in as local administrator of a domain member server and then perform the "w32tm /query /source".

Now, the domain member server is synchronizing the time with the Hyper-V host server.

According "Time Synchronization in Hyper-V", the "Time synchronization" of "Integration Services" should be enabled in virtual machines. However, administrators can update the registry in virtual machines to stop W32Time from using the Hyper-V time synchronization integration service for moment-to-moment synchronization.

  • Update the Windows Time Service in a domain member server, TM01, to synchronize a domain controller

1. On TM01, log in as Local Administrator.
2. Launch "Registry Editor".
3. Navigate to "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\W32Time\TimeProviders\VMICTimeProvider".
4. On right pane, double-click "Enabled".

5. Next to "Value data", change to "0".

6. Click "OK".

7. Close "Registry Editor".
8. Launch "Command Prompt" as administrator.
9. Perform "w32tm /config /syncfromflags:domhier /update" to update the setting to synchronize the time with a domain controller.

10. Perform "net stop w32time & net start w32time" to restart the Windows Time service.

11. Perform "w32tm /resync /force" to force synchronization.

12. Perform "w32tm /query /source" to verify the result.

As a result, the domain member server which is a virtual machine synchronize the time with a domain controller.

More information:

This posting is provided “AS IS” with no warranties, and confers no rights!

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