Support for Windows Vista Service Pack 1 (SP1) ends on July 12, 2011. To continue receiving security updates for Windows, make sure you're running Windows Vista with Service Pack 2 (SP2). For more information, refer to this Microsoft web page: Support is ending for some versions of Windows.
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.
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:
322756 How to back up and restore the registry in Windows
To manually change these settings to the default Windows Vista values, follow these steps:
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.
Locate and then click the following registry subkey:
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.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
Specifies the time offset, in tenths of a microsecond (A tenth of a microsecond is equal to 10 to the power of -7). Times that are larger than or equal to this value are considered suspicious and possibly incorrect.
Specifies how long, in seconds, that a suspicious time offset must persist before it is accepted as correct.
Stores configuration data for the policy setting, Configure Windows NTP Client.
Indicates whether the NtpServer provider is enabled in the current Time Service.
Windows Vista Service Pack 1, Windows Vista Enterprise 64-bit Edition, Windows Vista Home Basic 64-bit Edition, Windows Vista Home Premium 64-bit Edition, Windows Vista Ultimate 64-bit Edition, Windows Vista Business, Windows Vista Business 64-bit Edition, Windows Vista Enterprise, Windows Vista Home Basic, Windows Vista Home Premium, Windows Vista Starter, Windows Vista Ultimate