To configure the Windows Time service to use an internal hardware clock, you can change the announce flag on the authoritative timeserver. Changing the announce flag forces the computer to announce itself as a reliable time source and to use the built-in complementary metal oxide semiconductor (CMOS) clock. To configure theWindows Time service to use an internal hardware clock, follow these steps.
Warning Serious problems might occur if you modify the registry incorrectly by using Registry Editor or by using anothermethod. These problems might require that you reinstall your operating system. Microsoft cannot guarantee that these problems can be solved. Modify the registry at your own risk.
1. Click Start, clickRun, type regedit, and then click OK.
2. Locate and then click the following registry entry:
3. In the right pane, right-clickAnnounceFlags, and then click Modify.
4. In the Edit DWORD Value dialog box, under Value data, type 5, and then click OK.
5. Enable NTPServer.
a. Locate and then click the following registry subkey:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\W32Time\TimeProviders\NtpServer\
b. In the right pane, right-click Enabled, and then click Modify.
c. In the Edit DWORD Value dialog box, type 1under Value data, and then click OK.
Exit Registry Editor.
At the command prompt, type the following command to restart the Windows Time service, and then press ENTER:
net stop w32time && netstart w32time
To reset the local computers' time against the time server, run the following command on all the computers except the time server:
w32tm /resync /rediscover
Note You must not configurethe time server to synchronize with itself. If you configure the time server to synchronize with itself, the following events are logged in the Application log:
The time provider NtpClient cannot...