Microsoft KB Archive/905952

Knowledge Base

Messaging performance is slower than expected in Antigen, and the Antigen client stops responding

Article ID: 905952

Article Last Modified on 8/21/2007

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APPLIES TO

• Microsoft Antigen for Exchange
• Microsoft Antigen for SMTP Gateways
• Sybari Antigen 8.0 for IM
• Sybari Antigen 8.0 for Microsoft Exchange
• Sybari Antigen 8.0 for Microsoft SharePoint Portal Server
• Sybari Antigen 8.0 for SMTP Gateways
• Sybari Antigen 7.5 for IM
• Sybari Antigen 7.5 for Lotus Domino
• Sybari Antigen 7.5 for Microsoft Exchange
• Sybari Antigen 7.5 for Microsoft SharePoint Portal Server
• Sybari Antigen 7.5 for SMTP Gateways
• Sybari Antigen 7.0 for Lotus Domino

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SYMPTOMS

You may experience the following symptoms when you are using Antigen on a server that is running Microsoft Windows Server 2003 Service Pack 1 (SP1):

• Messaging performance is slower than expected. Additionally, scanning performance may be decreased.
• The Antigen client computer stops responding.
• The Antigen services do not stop in a timely manner.

CAUSE

This issue occurs if the following conditions are true:

• You are using the Kaspersky scan engine together with Antigen.
• Data Execution Prevention (DEP) is enabled on the Windows Server 2003 SP1-based server.
  
  Note By default, DEP is enabled on computers that are running Microsoft Windows Server 2003 Service Pack 1 (SP1) or Microsoft Windows XP Service Pack 2 (SP2).
  
  For more information about DEP, click the following article number to view the article in the Microsoft Knowledge Base:

  875352 A detailed description of the Data Execution Prevention (DEP) feature in Windows XP Service Pack 2, Windows XP Tablet PC Edition 2005, and Windows Server 2003

RESOLUTION

To resolve this issue, follow these steps:

1. Click Start, click Control Panel, and then double-click System.
2. Click the Advanced tab, and then click Settings under Performance.
3. Click the Data Execution Prevention tab, and then click Turn on DEP for all programs and services except those I select.
4. Click Add, and then add the following executable files as appropriate.
   • Antigen for Microsoft Exchange:
     • Antigeninternet.exe
     • Antigenrealtime.exe
     • Antigenmanual.exe
     • Antengup.exe
     • Getenginefiles.exe
     • Antigenservice.exe
     • ScanEngineTest.exe (This file applies only to the 9.0 versions of Antigen.)
   • Sybari Antigen for Microsoft SharePoint Portal Server:
     • Antigenrealtime.exe
     • Antigenmanual.exe
     • Antengup.exe
     • Getenginefiles.exe
     • Antigenservice.exe
   • Sybari Antigen for IM:
     • Antengup.exe
     • Getenginefiles.exe
     • Antigenservice.exe
     • Antigenim.exe
   • Antigen for SMTP Gateways:
     • Antigeninternet.exe
     • Antengup.exe (This file applies only to the 7.5 and 8.0 versions of Antigen.)
     • Getenginefiles.exe
     • Antigenservice.exe
     • ScanEngineTest.exe (This file applies only to the 9.0 versions of Antigen.)
   • Sybari Antigen for Lotus Domino:
     • NNWalljp.exe
     • NScan.exe
     • NnEngUpd.exe

     Note If Nshield is enabled, add the following executable files:

     • Nserver.exe
     • Nreplica.exe
     • Nhttp.exe

Keywords: kbtshoot KB905952

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