Summary

Previous cumulative time zone updates for Windows introduced a discrepancy in the 2011 calendar history of the following time zones:

  • Samoa Standard Time

  • Russian Standard Time

  • Ekaterinburg Standard Time

  • N. Central Asia Standard Time

  • North Asia Standard Time

  • North Asia East Standard Time

  • Yakutsk Standard Time

  • Vladivostok Standard Time

  • Magadan Standard Time

  • Kaliningrad Standard Time

This update fixes 2011 calendar history for these time zones.

Resolution

Samoa Time zone changes were included in Microsoft Knowledge Base article 2633952 (December 2011 Cumulative time zone update). As a result of this update, the entire 2011 calendar was updated to (UTC+13). This update reverts the 2011 calendar to (UTC-11) while the 2012 and future calendars will continue to be (UTC+13). Russian Time zone changes were included in Knowledge Base article 2570791 (August 2011 Cumulative time zone update). As a result of Russia canceling DST and staying on permanent "summer time," the entire 2011 calendar was updated to summer time. This update changes the 2011 calendar to show winter time before March 27, 2011 while DST was still in effect. Important This update exposes a bug in the "Date and Time" Control Panel item in Windows 7 and Windows Server 2008 R2 that might prevent changing the date and time value within certain ranges. To resolve this problem, please make sure that you have downloaded update KB2657025 and that you have installed it on the system. For more information about how DST changes may affect other Microsoft products, visit the following Microsoft website:

http://support.microsoft.com/gp/cp_dst The following files are available for download from the Microsoft Download Center:DownloadDownload the Update for Windows 7 (KB2657025) package now.DownloadDownload the Update for Windows 7 for x64-based Systems (KB2657025) package now.DownloadDownload the Update for Windows Server 2008 R2 x64 Edition (KB2657025) package now.DownloadDownload the Update for Windows Server 2008 R2 for Itanium-based Systems (KB2657025) package now.DownloadDownload the Update for Windows Vista (KB2657025) package now.DownloadDownload the Update for Windows Vista for x64-based Systems (KB2657025) package now.DownloadDownload the Update for Windows Server 2008 (KB2657025) package now.DownloadDownload the Update for Windows Server 2008 x64 Edition (KB2657025) package now.DownloadDownload the Update for Windows Server 2008 for Itanium-based Systems (KB2657025) package now.DownloadDownload the Update for Windows XP (KB2657025) package now.DownloadDownload the Update for Windows XP x64 Edition (KB2657025) package now.DownloadDownload the Download the Update for Windows Server 2003 (KB2657025) package now.DownloadDownload the Update for Windows Server 2003 x64 Edition (KB2657025) package now.DownloadDownload the Update for Windows Server 2003 for Itanium-based Systems (KB2657025) package now.For more information about how to download Microsoft support files, click the following article number to view the article in the Microsoft Knowledge Base:

119591 How to obtain Microsoft support files from online services

Restart requirement

You may have to restart the computer after you apply this update.

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