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Performance issues when OfficeScan clients scan machines installed with Novell Zenworks

    • Updated:
    • 6 Apr 2020
    • Product/Version:
    • OfficeScan 10.6
    • OfficeScan 11.0
    • OfficeScan 11.0
    • OfficeScan XG
    • OfficeScan XG.All
    • Platform:
    • Windows 2003 Enterprise Server
    • Windows 2003 Standard Server Edition
    • Windows 2008 Enterprise Server
    • Windows 2008 Standard Server Edition
    • Windows 7 32-bit
    • Windows Vista 32-bit
    • Windows XP Professional

Upon startup, the machine with Novell Zenworks takes a long time (5-6 minutes) to log on. When OfficeScan client is removed, the boot-up time will take only 1-2 minutes.


Novell Zen or ZCM is a full solution for the full lifecycle management of a Windows workstation, from initial imaging to deploying applications (bundles), policies (Group Policies, Dynamic Local User etc.), asset inventory and management/reconciliation of licensing and more.

OfficeScan Real-time Scan will then scan the following Novell directories:

  • C:\Program Files\Novell\ZENworks\logs\ExternalStore
    Files being scanned are .tmp and .log extensions.
  • C:\Program Files\Novell\ZENworks\cache\zmd\ZenCache\metaData
    Files being scanned are .db extension.
  • C:\Program Files\Novell\ZENworks\logs
    Files being scanned are .log extension.
  • C:\Program Files\Novell\ZENworks\cache\zmd
    Files being scanned are .appstate extension

These files attribute to the slow log on performance.

To improve the log on process and resolve the issue, do the following:

  1. Exclude the following extensions and directories from the Real-time Scan.
    1. For OfficeScan 10.6, log on to the OfficeScan management console and go to Networked Computers > Client Management > Settings > Real-time Scan Settings.
      For OfficeScan 11.0 and XG, log on to the OfficeScan management console and go to Agents > Agent Management > Settings > Scan Settings > Real-time Scan Settings.
    2. Under Scan Exclusion, exclude the directories and file extensions below and then click Apply to All Clients.

      • C:\Program Files\Novell\ZENworks\logs\ExternalStore
      • C:\Program Files\Novell\ZENworks\cache\zmd\ZenCache\metaData
      • C:\Program Files\Novell\ZENworks\cache\zmd

      • tmp
      • log
      • appstate
  2. Disable TSCAtStart by modifying ofcscan.ini from the OfficeScan server.
    1. Go to the default OfficeScan server installation directory. By default it is ..\Program Files\Tend Micro\OfficeScan\PCCSRV.
    2. Open the ofcscan.ini file using Notepad or any text editor.
    3. Look for the [Global Settings] section and apply this setting:

      [Global Settings]

    4. Save and close the file.
    5. In the OfficeScan management console, go to Global Settings to deploy the settings to the clients.
    6. On the client machine, restart the OfficeScan NT Listener service.
    7. Reboot the workstation.
  3. On the target workstation, stop the OfficeScan NT Real-time Scan service.
  4. Open the Registry Editor.
    Always back up the whole registry before making any modifications. Incorrect changes to the registry can cause serious system problems.
  5. Go to HKEY_LOCAL_MACHINE\SOFTWARE\TrendMicro\PC-cillinNTCorp\CurrentVersion\Real Time Scan Configuration\ and do the following:
    1. Set the following keys and their corresponding values:

      ScanIncoming = 0
      ScanNetwork = 0
      VirusForbiddenFolderOnOff = 0 

    2. Create a new DWORD key named "NTRtScanInitSleep" and set its value (Decimal) to "360000".
  6. Close the Registry Editor.
  7. Start the OfficeScan NT Real-time Scan service and reboot the machine.
  8. Delete the Cache files by going to Programs > Accessories > System tools > Disk Cleanup.

If the above steps did not resolve the issue, then do the following:

  1. Download the CDT utility.
  2. Run the CDT utility and collect the CDT logs.
  3. Send the files to Trend Micro Technical Support.
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