Some W32Time-related registry settings are not updated after you upgrade Windows XP Service Pack 2 to Windows Vista or to Windows Vista Service Pack 1

You upgrade Windows XP Service Pack 2 (SP2) to Windows Vista or to Windows Vista Service Pack 1 (SP1). However, the following Windows Time Synchronization service (W32Time)-related registry settings are not updated to the default Windows Vista values.

Default registry settings in Windows XPDefault registry settings in Windows VistaThis article helps you fix the problem.

To have us fix this problem for you, go to the "Fix it for me" section. If you would rather fix this problem yourself, go to the "Let me fix it myself" section.

To fix this problem automatically, click the Fix this problem link. Then click Run in the File Download dialog box, and follow the steps in this wizard.

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Note This wizard may be in English only; however, the automatic fix also works for other language versions of Windows.

Note If you are not on the computer that has the problem, you can save the automatic fix to a flash drive or to a CD, and then you can run it on the computer that has the problem.

Now go to the "Did this fix the problem?" section.

Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base: To manually change these settings to the default Windows Vista values, follow these steps:

1. Click Start, type regedit in the Start Search box, and then click regedit in the Programs list. If you are prompted for an administrator password or for confirmation, type the password, or click Continue.
2. Locate and then click the following registry subkey: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\W32Time\Config
3. Right-click LargePhaseOffset, and then click Modify.
4. In the Value data box, type 02faf080, and then click OK.
5. Right-click SpikeWatchPeriod, and then click Modify.
6. In the Value data box, type 00000384, and then click OK.
7. Locate and then click the following registry subkey: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\W32Time\TimeProviders\NtpClient
8. Right-click EventLogFlags, and then click Modify.
9. In the Value data box, type 1, and then click OK.
10. Locate and then click the following registry subkey: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\W32Time\TimeProviders\NtpServer
11. Right-click Enabled, and then click Modify.
12. In the Value data box, type 0, and then click OK.
13. Exit Registry Editor.
14. Restart the computer.

Check whether the problem is fixed. If the problem is fixed, you are finished with this article. If the problem is not fixed, you can contact support (http://support.microsoft.com/contactus) .

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.