Articles

Known Antivirus issues and workarounds

• Unable to initialize plugin, error: Failed to close Kerio Antivirus plugin

  Overview While trying to update Kerio Connect Antivirus (AV), the AV plugin is not responding. The server reboot or service stop/start generates the following error: Engine Kerio Antivirus failed to s...

• Unable to start Kerio Connect Antivirus and Anti-spam

  Overview While attempting to start Kerio Connect Antivirus and Anti-spam, the modules are facing issues generating the following errors: AntivirusModule.cpp: Antivirus update failed: Cannot find updat...

• Antivirus Server error: Internet connection is probably broken. Cannot check for new version.

  Overview While updating Kerio Connect Antivirus, the following errors appear in logs: AntivirusModule.cpp: Antivirus Server error(0): Internet connection is probably broken. Cannot check for new versi...

• Antivirus is not updating with Unable to fetch updates: HTTPError (-2106)

  Overview While attempting to update Kerio Connect built-in Antivirus plugin on macOS Catalina, the following server error is returned: AntivirusModule.cpp: Antivirus Server error(0): Unable to fetch u...

• Antivirus and License are not updating with Unknown_Error (-3000) or CouldNotConnect(-2100)

  Overview You are running Kerio Connect on an older OS lacking TLS 1.1 and 1.2 support, such as Windows Server 2008R2, Windows Server 2012, or macOS 10.8.5. The Kerio Connect Antivirus module can't be ...

• Fixing Kerio Connect Antivirus Plugin Timeout Issues

  Overview Kerio Connect includes Kerio Antivirus, which provides integrated protection against malicious emails with viruses. At times, you might experience Timeout issues with the Antivirus (AV) plugi...

• Resolving 'Antivirus check cannot be performed' error

  Overview You may receive a Non-Delivery Receipt (NDR) email with the following informative message sent: The server was not able to deliver your mail message <xxxx@testmail.com> (<mail.domain.com>: An...

• Resolving Antivirus Server Error: c0000001

  Overview Kerio Connect Antivirus may fail to initialize, download updates or scan for threats/viruses due to plugin issues, conflicts with other Antivirus software installed, blocked connection to the...

• Antivirus Plugin Is Failing to Update with SSL Certificate Errors

  Overview Kerio Connect Antivirus updates fail to download new versions due to plugin issues or the SSL certificate not being verified. When the plugin update fails, the Debug log with the Antivirus Ch...

• Configuring Antivirus Protection in Kerio Connect

  Overview Kerio Antivirus is integrated protection against malicious emails with viruses. Viruses may infect computers and cause harm to files or computer systems. Kerio Connect Antivirus has additiona...