After you enable the Save Content on Conversion Error feature in Microsoft Exchange Server 2003, you experience the following symptoms:

•	The performance of the Exchange Server 2003 server deteriorates over time.
•	You have to restart the Exchange Server 2003 server to resume typical performance levels.

Additionally, you notice that the number of file handles that are allocated to the Store.exe process continually increases.

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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. 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.

Prerequisites

You must install Microsoft Exchange Server 2003 Service Pack 2 (SP2) before you install the hotfix.

For more information, click the following article number to view the article in the Microsoft Knowledge Base:

Restart requirement

You do not have to restart the computer after you apply the hotfix. However, the Microsoft Exchange Information Store service and all dependent services will be restarted.

Hotfix replacement information

This hotfix does not replace any other hotfixes.

File information

The global 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.

File name	File version	File size	Date	Time	Platform
Exosal.dll	6.5.7651.22	70,144	29-Apr-2006	05:37	x86
Mdbmsg.dll	6.5.7651.22	3,361,280	29-Apr-2006	04:51	x86
Store.exe	6.5.7651.22	5,257,216	29-Apr-2006	05:40	x86

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

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Warning 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.
To enable the Save Content on Conversion Error feature, you must configure the following registry entries.

Registry entry name	Value type	Value data
Save Content on Conversion Error	REG_DWORD	1
Save Content location	REG_SZ	drive_letter:\

These registry entries are located under the following registry subkey: For more information about the terminology that Microsoft uses for software that is corrected after it is released, click the following article number to view the article in the Microsoft Knowledge Base: For more information about the naming schema for Exchange software updates, click the following article number to view the article in the Microsoft Knowledge Base:

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