Microsoft KB Archive/900403

= You experience poor server performance and difficulty isolating VSAPI-related issues on the Exchange store in Exchange Server 2003 =

Article ID: 900403

Article Last Modified on 10/25/2007

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APPLIES TO


 * Microsoft Exchange Server 2003 Standard Edition
 * Microsoft Exchange Server 2003 Enterprise Edition

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SYMPTOMS
When a Microsoft Exchange Server 2003-aware virus scanner scans the Exchange store, you may experience one or both of the following symptoms:
 * Difficulty accessing e-mail messages or attachments.
 * Poor performance on the server that is running Exchange Server 2003.

Additionally, it is difficult and time-consuming for support professionals to isolate Virus Scanning Application Programming Interface (VSAPI)-related issues on the Exchange store.



Hotfix information
After you install this hotfix, additional tracing is added to the virus scanning API in the Exchange store. This additional tracing breaks down the virus scanning process into steps.

A supported hotfix is now 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 service pack that contains this hotfix.

To resolve this problem, submit a request to Microsoft Online Customer Services to obtain the hotfix. To submit an online request to obtain the hotfix, visit the following Microsoft Web site:

http://go.microsoft.com/?linkid=6294451

Note If additional issues occur or 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. To create a separate service request, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

Prerequisites
Microsoft Exchange Server 2003 Service Pack 1 (SP1).

Restart requirement
You have to restart the Information Store Service after you apply this software update.

Hotfix replacement information
This hotfix does not replace any other software updates.

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.



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section.



MORE INFORMATION
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

Keywords: kbqfe kbfix kbbug kbexchange2003presp2fix kbpubtypekc KB900403

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