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ITsVISTA KB-Link: KB952660

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 XP

Registry location Value name Value type and data
HKEY_LOCAL_MACHINESYSTEMCurrentControlSetServicesW32TimeConfig LargePhaseOffset dword:00138800
(Decimal:1280000)
HKEY_LOCAL_MACHINESYSTEMCurrentControlSetServicesW32TimeConfig SpikeWatchPeriod dword:0000005a
(Decimal:90)
HKEY_LOCAL_MACHINESYSTEMCurrentControlSetServicesW32TimeTimeProvidersNtpClient EventLogFlags dword:00000000
(Decimal:0)
HKEY_LOCAL_MACHINESYSTEMCurrentControlSetServicesW32TimeTimeProvidersNtpServer Enabled dword:00000001
(Decimal:1)

Default registry settings in Windows Vista

Registry location Value name Value type and data
HKEY_LOCAL_MACHINESYSTEMCurrentControlSetServicesW32TimeConfig LargePhaseOffset dword:02faf080
(Decimal:50000000)
HKEY_LOCAL_MACHINESYSTEMCurrentControlSetServicesW32TimeConfig SpikeWatchPeriod dword:00000384
(Decimal:900)
HKEY_LOCAL_MACHINESYSTEMCurrentControlSetServicesW32TimeTimeProvidersNtpClient EventLogFlags dword:00000001
(Decimal:1)
HKEY_LOCAL_MACHINESYSTEMCurrentControlSetServicesW32TimeTimeProvidersNtpServer Enabled dword:00000000
(Decimal:0)

For more information on this issue, including potential causes, workarounds, and resolutions, see: Microsoft KB Article KB952660.

Fix It
Microsoft has a way to automatically fix this problem, click the "Fix It" image to go to the Knowledge Base page that contains the download.

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