Specifically, the preset Group Policy settings are more restrictive than the corresponding default registry entries. These more restrictive settings may trigger event logging instead of the expected time synchronization with the server.
- The registry entries for the Windows Time service are found under the following registry subkey:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\W32Time
- Certain Group Policy settings have the same names as the registry entries for the Windows Time service. For example, the
LargePhaseOffset and SpikeWatchPeriod Group Policy settings appear in the following location in the Group Policy Object Editor:Computer Configuration\Administrative Templates\System\Windows Time ServiceHowever, the policy updates the following location in the system registry:HKEY_LOCAL_MACHINE\SOFTWARE\POLICIES\MICROSOFT\W32TimeThe LargePhaseOffset and SpikeWatchPeriod registry entries appear under both the following registry subkeys:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\W32Time\ConfigHowever only the values of the following registry subkey are applied:
- Click Start, click Run, type gpedit.msc, and then click
- In the Group Policy Object Editor, expand Computer Configuration, expand Administrative Templates, expand System, and then click Windows Time Service.
- On the right pane, double-click Global Configuration Settings.
- On the Setting tab, change the value of the LargePhaseOffset Global Group Policy setting. The recommended preset value is 50000000.
For more information about the LargePhaseOffset setting, visit the following Microsoft Web site:
- A higher value for the LargePhaseOffsetsetting generates fewer warning messages. Use a higher value if you do not require highly accurate time synchronization.
- The SpikeWatchPeriod sets the time period that must elapse before the computer’s time is reset after the computer loses synchronization.
- Depending on your time service infrastructure, you can maintain the available preset values for other Group Policy settings that are not mentioned in this section.
Article ID: 902229 - Last Review: Jul 6, 2013 - Revision: 1