Microsoft KB Archive/931925

= FIX: The time zone settings and the system clock may be incorrect on a Windows CE .NET 4.0-based device =

Article ID: 931925

Article Last Modified on 2/23/2007

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APPLIES TO


 * Microsoft Windows CE .NET 4.0

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SYMPTOMS
The U.S. Energy Policy Act of 2005 was passed by the U.S. Congress in July 2005. The act extends daylight saving time (DST) in the United States by approximately four weeks. Beginning in 2007, DST will start three weeks earlier and will end one week later that it had previously. DST will start on the second Sunday in March at 2:00 A.M. and will end on the first Sunday in November at 2:00 A.M. In the United States, DST will begin on March 11, 2007, and will end on November 4, 2007.

In Mexico, DST will continue to start on the first Sunday in April at 2:00 A.M. and to end on the last Sunday in October at 2:00 A.M. In Mexico, DST will begin on April 1, 2007, and will end on October 28, 2007.

On a Microsoft Windows CE .NET 4.0-based device, the time zone settings and the system clock may be incorrect during the four-week period of extended daylight saving time. If the time zone settings are incorrect, the system clock may be off by one hour. Additionally, certain applications that run on a Windows CE .NET 4.0-based device may not display the correct time.



Software update information
A supported software update is now available from Microsoft as Windows CE .NET 4.0 Platform Builder Update 070207_KB931925. To resolve this problem immediately, click the following article number for information about how to obtain Windows CE Platform Builder updates and core operating system software updates:

837392 How to locate core operating system fixes for Microsoft Windows CE Platform Builder products

Prerequisites
This update is supported only if all previously issued updates for this product have also been installed.

Restart requirement
After you install this update, you must perform a clean build of the whole platform. To clean the platform, click Clean on the Build menu. To build the platform, click Build Platform on the Build menu. You do not have to restart your computer after you apply this update.

Update replacement information
This update does not replace any other updates.

File information
The English version of this update has the file attributes (or later file attributes) that are listed in the following table.

The English version of this update 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.



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
The following time zones are affected by the changes to DST.

Note Times are given in Coordinated Universal Time (Greenwich Mean Time).

United States and Canada
The following time zones will be updated when you install the software update that is described in this article:
 * (UTC-03:30) Newfoundland
 * (UTC-4) Atlantic Time (Canada)
 * (UTC-5) Eastern Time (United States and Canada)
 * (UTC-6) Central Time (United States and Canada)
 * (UTC-7) Mountain Time (United States and Canada)
 * (UTC-8) Pacific Time (United States and Canada)
 * (UTC-9) Alaska

Note Tijuana will not appear in the same time zone as Pacific Time.

Mexico
The following time zones will be updated when you install the software update that is described in this article:
 * (UTC-6) Guadalajara, Mexico City, Monterrey
 * (UTC-7) Chihuahua, La Paz, Mazatlan
 * (UTC-8) Tijuana, Baja California

