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Applications that use Microsoft Collaboration Data Objects (CDO) may not recognize the daylight saving time transition changes for Australia in the year 2006

Important This article contains information about how to modify the registry. Make sure to back up the registry before you modify it. Make sure that you know how to restore the registry if a problem occurs. For more information about how to back up, restore, and modify the registry, click the following article number to view the article in the Microsoft Knowledge Base:
256986 Description of the Microsoft Windows registry
Programs that are built by using Microsoft Collaboration Data Objects (CDO), such as Microsoft Outlook Web Access, may not correctly reflect this change to the daylight saving time transition date because CDO maintains an internal table to track time zone information. This table is not updated with changes that are made to the operating system time zone.

Hotfix information

A supported hotfix is 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.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, submit a request to Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if 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. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site: Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.


You must install the following registry update before you apply the hotfix. The following file is available for download from the Microsoft Download Center:
DownloadDownload the registry update package now.

Restart requirement

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

Hotfix replacement information

This hotfix does not replace any other hotfixes.

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 tool in Control Panel.
File nameFile versionFile sizeDateTimePlatform
This issue occurs only in the year 2006 because of the custom time zones that are required.
The Commonwealth Games are scheduled to be held during March 2006 in Melbourne, Australia. Several Australian states have changed the daylight saving time transition end date to the first Sunday of April 2006. These states include New South Wales, Victoria, Australian Capital Territory, South Australia, and Tasmania.

Daylight saving time for the year 2006

For the year 2006 only, the official daylight saving time transition dates for each of the states of Australia are as follows.
State nameOriginal dateNew date
South Australia27/03/20062/4/2006
Note Clocks are advanced at 2 A.M. by one hour on the start day to become Summer Time. Clocks are wound back at 3 A.M. by one hour on the end day to become Standard Time.

The change to the daylight saving time will affect the transition settings for the following time zones:
  • (GMT + 10:00) Canberra, Melbourne, Sydney
  • (GMT + 10:00) Hobart
  • (GMT + 09:30) Adelaide
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
For more information, click the following article number to view the article in the Microsoft Knowledge Base:
817903 New naming schema for Exchange Server software update packages
For more information about a solution to the same issue in Microsoft Exchange Server 2003, click the following article number to view the article in the Microsoft Knowledge Base:
909933 Microsoft Outlook Web Access and Microsoft Collaboration Data Objects (CDO) daylight saving time transition change for Australia in the year 2006
For more information about other Microsoft products that are affected by this issue, click the following article number to view the article in the Microsoft Knowledge Base:
909915 Notification of Australian Daylight Savings changes for Microsoft products for the year 2006

Article ID: 906865 - Last Review: 09/10/2011 15:36:00 - Revision: 2.0

Microsoft Exchange 2000 Server Standard Edition, Microsoft Exchange 2000 Enterprise Server

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