If you have already deployed update 955839, read the descriptions of the specific time zone changes that are addressed in this article to determine whether you must deploy this update immediately. If systems are not directly affected, you can schedule deployment at the next available opportunity.
We recommend that you deploy the most current Windows cumulative time zone update to guarantee the consistency of the time zone database on all systems.
Important Before you apply the update that is described in this article, be aware of potential issues that may affect Microsoft Outlook.
For more information about these issues, click the following article number to view the article in the Microsoft Knowledge Base:
931667�
How to address the daylight saving time changes in 2007 by using the Time Zone Data Update Tool for Microsoft Office Outlook
Important- If you are running Microsoft Exchange Server in an
Information Technology (IT) environment, you must take additional measures to
guarantee the correct operation of Exchange Server.
For more information about the Exchange daylight saving time (DST)
update, click the following article number to view the article in the Microsoft Knowledge Base:
941018� How to address daylight saving time by using the Exchange Calendar Update Tool
- Cumulative time zone updates contain only data that has
changed for a specific region or that was added to maintain parity with
other operating system versions. Therefore, if a time zone key has been
deleted, some original values may not be restored after you apply the
cumulative zone update.
We do not recommend that you delete any registry keys that are related to time zones. On a computer that has incomplete time zone keys, first restore the time zone keys from a known good backup. Then, apply the update.