Overview

Kerio Connect is constantly showing the following entries in the Logs:

[11/Oct/2019 09:34:47] AntivirusModule.cpp: Antivirus module: Unable to open DLL library D:\Kerio\MailServer/plugins/kavmodule.dll
[11/Oct/2019 09:39:48] AntivirusModule.cpp: Antivirus module: Unable to open DLL library D:\Kerio\MailServer/plugins/kavmodule.dll

This article provides steps on how to resolve this error message.

You may also encounter this error after upgrading to a beta version (for example, 10.0.6 beta). The steps in this article also address the issue in beta versions.

Prerequisites

• Admin access to Kerio Connect server.
• The latest version of Kerio Connect is installed.
• Ensure that the Kerio folder (in this case D:\Kerio\MailServer) is excluded from any Antivirus software or firewall installed on the server.

Solution

1. Stop Kerio Connect.

2. Navigate to the folder reported in the logs (i.e., D:\Kerio\MailServer/plugins/).

3. Download the attached zip file containing the kavmodule.dll file.

4. Extract the content of the zip file to the directory in step 2.

   Note: The DLL file attached is from a server running version 9.2.10. Please ensure that the affected server is running the same version to avoid any issues after copying the DLL file.

5. Start Kerio Connect.

Summary

This article provided a step-by-step guide to resolve the error where the Kerio Connect antivirus module is unable to open the DLL library. By stopping the service, replacing the DLL file, and restarting the service, the issue should be resolved.

FAQ

Q1: What should I do if the error persists after following these steps?
A1: Ensure that the correct version of the DLL file is used. Double-check that the Kerio Connect service was properly restarted. If the issue persists, contact Kerio support.

Q2: Can I use the DLL file from a different version of Kerio Connect?
A2: It is recommended to use the DLL file that corresponds to the same version of your Kerio Connect server to avoid compatibility issues, however, the DLL shared in this article has been known to solve the issue for multiple versions.

Q3: How can I ensure that my antivirus software does not interfere with Kerio Connect?
A3: Make sure to exclude the Kerio Connect folder from any antivirus or firewall settings on your server.

Related Articles

• Antivirus Plugin Is Failing to Update with SSL Certificate Errors
• I/O Timeout in Antivirus Debug Messages
• Fixing Kerio Connect Antivirus Plugin Timeout Issues

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