Article ID: 891789 - View products that this article applies to.
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:
(http://support.microsoft.com/kb/256986/ )Description of the Microsoft Windows registry
You may experience one of more of the following symptoms in your Microsoft Exchange 2000 Server or Microsoft Exchange Server 2003 organization:
This problem occurs if the Microsoft Exchange Information Store service background cleanup process does not run. The background cleanup process reclaims space that was used by deleted folders, by messages, or by message attachments. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
159306The Microsoft Exchange Information Store service background cleanup process does not run if the following default registry entries do not exist or are not populated correctly for one or more Exchange 2000 databases:
(http://support.microsoft.com/kb/159306/ )IS maintenance tasks not on IS schedule
Some third-party antivirus programs create database-specific registry keys before the Exchange Server database is mounted. For example, this problem occurs in the following scenario:
Exchange Server 2003
Service pack informationTo resolve this problem, obtain the latest service pack for Exchange Server 2003. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/836993/EN-US/ )How to obtain the latest service packs for Exchange Server 2003
Exchange 2000 Server
Hotfix informationA 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:
PrerequisitesBecause of file dependencies, this software update requires both the following packages to be installed:
Restart requirementYou do not have to restart your computer after you apply this hotfix. However, the Microsoft Exchange Information Store service is automatically stopped and then restarted when you apply this hotfix.
Hotfix replacement informationThis hotfix does not replace any other hotfixes.
File informationThe 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.
Date Time Version Size File name --------------------------------------------------------- 25-Mar-2005 13:19 6.0.6617.58 2,342,912 Mdbmsg.dll 25-Mar-2005 14:12 6.0.6617.58 4,706,304 Store.exe
Hotfix installation informationWarning Serious problems might occur if you modify the registry incorrectly by using Registry Editor or by using another method. These problems might require that you reinstall your operating system. Microsoft cannot guarantee that these problems can be solved. Modify the registry at your own risk.
Important When you follow these steps to resolve this problem, the background cleanup process runs to clean up all the items in your Exchange 2000 databases that would have been cleaned up every 60 seconds. Therefore, you may experience an increased load on your Exchange 2000 computer until the background cleanup process has finished. We recommend that you follow these steps during a time when your Exchange 2000 users will be minimally affected. Additionally, you may experience delayed unread receipts that are generated as the background cleanup catches up. You may experience these delayed unread receipts if all the following conditions are true:
After you install this hotfix, follow these steps for each Exchange 2000 database on each Exchange 2000 computer that is missing the Background Cleanup registry entry or the Track Duplicates registry entry:
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
This problem was first corrected in Microsoft Exchange Server 2003 Service Pack 2.
For more information, click the following article numbers to view the articles in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/824684/ )Description of the standard terminology that is used to describe Microsoft software updates
(http://support.microsoft.com/kb/817903/ )New naming schema for Exchange Server software update packages
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