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Western Australia is introducing daylight saving time for a three-year trial period. The trial period starts at 2 A.M. on December 3, 2006. In Microsoft Outlook Web Access on Microsoft Exchange Server 2003 Service Pack 2 (SP2), the time settings may not reflect the change to daylight saving time during the transition period. This transition period starts at 2 A.M. on December 3, 2006. This period ends at 2 A.M. on March 25, 2007.
This problem occurs because Outlook Web Access maintains internal tables to track time zone information. The tables are not updated if changes are made to the time zone settings in the operating system.
To resolve this problem, install this hotfix on a server that is running Exchange Server 2003 SP2. This hotfix updates the Outlook Web Access components. You must install this hotfix on all the Exchange Server 2003 SP2 servers in your organization. Before you install this hotfix, make sure that the Microsoft Windows software update for the Western Australia daylight saving time problem is also installed on these servers.
For more information about the software update for the Western Australia daylight saving time problem in Microsoft Windows Server 2003 or in Microsoft Windows XP, click the following article number to view the article in the Microsoft Knowledge Base:
929120 Windows Server 2003-based computers and Windows XP-based computers that are set to the West Australia time zone do not change to daylight saving time on December 3, 2006
Note You can only apply this hotfix for the daylight saving time transition period that starts at 2 A.M. on December 3, 2006. This period ends at 2 A.M. on March 25, 2007.
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. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.
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, contact 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.
Because of file dependencies, you must install Microsoft Exchange Server 2003 Service Pack 2 (SP2) before you install this hotfix.
For more information about how to obtain the latest service packs for Exchange Server 2003, click the following article number to view the article in the Microsoft Knowledge Base:
836993 How to obtain the latest service packs for Exchange Server 2003
When you install this hotfix, the following services will be restarted:
The Microsoft Exchange Information Store service
The Microsoft Exchange System Attendant service
The World Wide Web Publishing service
The Simple Mail Transfer Protocol (SMTP) service
The Microsoft Exchange Routing Engine service
The Network News Transfer Protocol (NNTP) service
The HTTP SSL service
The IIS Admin service
Hotfix replacement information
This hotfix does not replace any other hotfixes.
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.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
For more information about the Western Australia daylight saving time trial, visit the following Microsoft Web site: