FIX: U.S. daylight saving time changes in 2007 do not occur on the correct day on Windows CE 5.0-based devices

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Article ID: 921095 - View products that this article applies to.
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U.S. daylight saving time zones change in 2007. However, these changes do not occur on the correct day on Microsoft Windows CE 5.0-based devices. Windows CE 5.0 changes the time on the first or last Sunday of the month. Windows CE 5.0 does not change the time on the second or third Sunday of the month.


This problem occurs because the Time Service in Windows CE 5.0 does not support the new U.S. time zone change. The code that reads the time zone assumes that the change occurs on the first or last Sunday of the month. However, the new U.S. time zone update occurs on the second Sunday of the month.


Software update information

A supported software update is now available from Microsoft as Windows CE 5.0 Platform Builder Monthly Update (July 2006). You can confirm this by scrolling to the "File information" section of this article. The package file name contains the product version, date, Knowledge Base article number, and processor type. The package file name format is:
Product version-yymmdd-kbnnnnnn-processor type
For example: Wincepb50-060503-kb917590-armv4i.msi is the ARMV4i Windows CE 5.0 Platform Builder fix that is documented in KB article 917590 and that is contained in the May 2006 monthly update. To resolve this problem immediately, click the following article number for information about obtaining Windows CE Platform Builder and core operating system software updates:
837392 How to locate core operating system fixes for Microsoft Windows CE Platform Builder products


There are no prerequisites.

Restart requirement

You do not have to restart the computer after you apply this software update.

Software update replacement information

This software update does not replace any other software updates.

File information

The English version of this software update package has the file attributes or the later file attributes that are listed in the following table.
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File nameFile sizeDateTime
The English version of this software 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.
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File nameFile sizeDateTimePath


Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.


The following article describes registry key changes for the 2007 daylight saving time settings. You must make these registry key changes to enable this software update to work correctly:
923953 How to configure daylight saving time for the United States and Canada in 2007 and in subsequent years on Windows Mobile-based devices
You are more likely to experience this problem in 2007 because the rules change for the daylight saving time start date and end date. For more information about the 2007 daylight saving time changes in the United States, visit the following Microsoft Web site:
For more information, 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


Article ID: 921095 - Last Review: March 1, 2007 - Revision: 2.0
  • Microsoft Windows CE 5.0
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