Overview

Kerio Connect Antivirus updates fail to download due to plugin issues or SSL certificate not being verified. When the plugin update fails, the following message appears in the Debug log (when the Antivirus Checking option is enabled). 

Unable to fetch updates: IOTimeout (-2108)

This article provides instructions on how to update Bitdefender when you receive the above error messages.

Prerequisites

• Full Admin Access to the Kerio server

Resolution

1. Stop Kerio Connect.

2. Navigate to the Kerio Connect installation folder.

   The default locations are:

   • Windows: C:\Program Files\Kerio\MailServer

   • macOS: /usr/local/kerio/mailserver

   • Linux: /opt/kerio/mailserver

3. Increase the I/O timeout to the plugin-specific options in mailserver.cfg

4. Add the following value to the AntivirOptions list:
   
   

   <list name="AntivirOptions">
       <listitem>
           <variable name="Plugin">avir_bitdefender</variable>
           <variable name="Name">UpdateIOTimeout</variable>
           <variable name="Value">120</variable>
       </listitem>
   </list>

5. Start Kerio Connect.

Validation

The Kerio Connect Antivirus update will be completed successfully.

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