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ESET for Kerio not working after upgrade to Kerio 9.0

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Hello, all.


Small problem with a client running Eset Security for Kerio Connect. After an upgrade to Kerio Connect 9.0, Eset is no longer working. Yes, first thought is to call the Kerio folks, but I found this in the Eset logs - "Failed to copy ESK plugin dll to kerio server installation directory".


Eset version is 4.5.16006.0, and it was running perfectly before the Kerio upgrade.


Thoughts/ideas/requests for logs? TIA.

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  • Solution

Hello, Kerio changed some of their paths in v9, so the files won't copy correctly, as they try to copy to the previous directories. Until we have a new version which takes into account these new paths as well, you can register the plugin manually:

  1. Turn Kerio Connect service off
  2. Turn Kerio Connect registration off (ESET Security->F5->Server->Connect: Off)
  3. Copy the following dll: C:\Program Files\ESET\ESET Security\x86\avir_esk.dll
    • to: C:\Program Files\Kerio\MailServer\plugins\avserver\Avirs\
    • to (create directory manually): C:\Program Files\Kerio\MailServer\plugins\Avirs\
    • paths may need to be updated based on Kerio installation (default paths)
  4. Edit Kerio Connect configuration file (C:\Program Files\Kerio\MailServer\mailserver.cfg)
    • Modify the "Antivir" section so that it contains:
      <table name="Antivir">
      <variable name="AvirEnabled">1</variable>
      <variable name="UsedInternal">0</variable>
      <variable name="UsedPlugin">avir_esk</variable>
    • Modify "AntivirOptions" section so that it contains:
      <list name="AntivirOptions">
  5. Turn Kerio Control registration on (ESET Security->F5->Server->Connect: On)
  6. Turn Kerio Control service on
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