Microsoft KB Archive/942894

= An update that addresses the change to daylight saving time in 2007 is available for Windows Server 2003 R2-based computers and for Windows Vista-based computers that are running Subsystem for UNIX-based Applications =

Article ID: 942894

Article Last Modified on 10/29/2007

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APPLIES TO


 * Windows Vista Ultimate
 * Windows Vista Enterprise
 * Microsoft Windows Server 2003 R2 Datacenter Edition (32-Bit x86)
 * Microsoft Windows Server 2003 R2 Datacenter x64 Edition
 * Microsoft Windows Server 2003 R2 Enterprise Edition (32-Bit x86)
 * Microsoft Windows Server 2003 R2 Enterprise x64 Edition
 * Microsoft Windows Server 2003 R2 Standard Edition (32-bit x86)
 * Microsoft Windows Server 2003 R2 Standard x64 Edition

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INTRODUCTION
An update that addresses the changes to daylight saving time (DST) in 2007 is available for Windows Server 2003 R2-based computers that are running Subsystem for UNIX-based Applications (SUA) and for Windows Vista-based computers that are running Subsystem for UNIX-based Applications (SUA).



MORE INFORMATION
Currently, the Windows time zone to Windows-to-Portable Operating System Interface (POSIX) zone information file mappings are inconsistent. Additionally, the files and not comprehensive. For example, Pacific standard time (PST) is mapped to Tijuana, a Mexican city. However, when you use the PST time zone, Mexican time settings are applied. This behavior causes the computer to ignore American DST changes in the PST time zone.



This update makes the Windows-to-Portable Operating System Interface (POSIX) time-zone mapping consistent and comprehensive.

Note This update addresses this problem for all time zones. These time zones include U.S. time zones and Canadian time zones. Additionally, this update supersedes update 934110. For more information, click the following article number to view the article in the Microsoft Knowledge Base:

934110 An update is available for Subsystem for UNIX-based Applications in Windows Server 2003 R2 that addresses daylight saving time changes in 2007

Windows Server 2003 R2
A supported hotfix is now available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next Windows Server 2003 R2 service pack that contains this hotfix.

To resolve this problem, submit a request to Microsoft Online Customer Services to obtain the hotfix. To submit an online request to obtain the hotfix, visit the following Microsoft Web site:

http://go.microsoft.com/?linkid=6294451

Note If additional issues occur or any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. To create a separate service request, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

Prerequisites
The following list contains prerequisites for this update:
 * A Windows Server 2003 R2-based computer that has hotfix 942878 installed.
 * A Windows Server 2003 R2 Service Pack 2 (SP2)-based computer that has hotfix 942878 installed.

Restart requirement
You must restart the computer after you apply this hotfix.

Hotfix replacement information
This hotfix does not replace a previously released hotfix.

File information
The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.

Windows Server 2003 R2 with Service Pack 2, x64-based versions


Windows Vista
A supported hotfix is now available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next service pack that contains this hotfix.

To resolve this problem, submit a request to Microsoft Online Customer Services to obtain the hotfix. To submit an online request to obtain the hotfix, visit the following Microsoft Web site:

http://go.microsoft.com/?linkid=6294451

Note If additional issues occur or any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. To create a separate service request, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

Prerequisites
To apply this hotfix, you must have hotfix 942878 installed on the Windows Vista-based computer.

Restart requirement
You must restart the computer after you apply this hotfix.

Hotfix replacement information
This hotfix does not replace a previously released hotfix.

File information
The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.

Windows Vista, x64-based versions




STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section.



MORE INFORMATION
For more information about hotfix 942878, click the following article number to view the article in the Microsoft Knowledge Base:

942878 A hotfix that addresses the change to daylight saving time in 2007 is available for Windows Services for UNIX and for Subsystem for UNIX-based Applications

For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:

824684 Description of the standard terminology that is used to describe Microsoft software updates

Keywords: kbbug kbfix kbqfe kbpubtypekc kbexpertiseinter kbhotfixserver KB942894

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