Microsoft KB Archive/939416

= No real-time scanning occurs on the Exchange store after you install Antigen =

Article ID: 939416

Article Last Modified on 10/3/2007

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APPLIES TO


 * Microsoft Antigen for Exchange
 * Sybari Antigen 8.0 for Microsoft Exchange

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Important This article contains information about how to modify the registry. Make sure that you 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:

256986 Description of the Microsoft Windows registry



SYMPTOMS
On a server that is running Microsoft Exchange Server, you install Microsoft Antigen 9.0 for Exchange or Sybari Antigen 8.0 for Microsoft Exchange. After you do this, no real-time scanning occurs on the Exchange store.

Note This problem occurs only if a third-party antivirus product, such as Trend antivirus software, was installed and then uninstalled on the server.



CAUSE
This problem occurs because a registry entry is incorrectly reset when the third-party antivirus product is uninstalled.



RESOLUTION
To resolve this problem, follow these steps.

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 the operating system. Microsoft cannot guarantee that these problems can be solved. Modify the registry at your own risk.  Click Start, click Run, type regedit, and then click OK. Locate and then click the following registry subkey:

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\MSExchangeIS\ \ 

 Right-click VirusScanEnabled, click Modify, type 1, and then click OK. Locate and then click the following registry subkey:

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\MSExchangeIS\ \ 

 Right-click VirusScanEnabled, click Modify, type 1, and then click OK. Repeat steps 2 to 5 for each Exchange Server database that is present on the server.</li> Exit Registry Editor.</li> Restart the Microsoft Exchange Information Store service.</li></ol>

<div class="status_section">

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

The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, about the performance or reliability of these products.

Keywords: kbtshoot kbprb kbexpertiseinter KB939416

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