Ensure your firewall allows outgoing traffic on (HTTPS) and Port 80 (HTTP) to Kerio's update servers.

The error "Categorization is disabled" appears if:

This article provides to permanently fix this issue, ranging from simple licensing checks to advanced command-line resets.

/etc/init.d/kerio-categorization restart

This disables the "Reliability detection" feature that turns off the filter during ISP instability. support.keriocontrol.gfi.com 3. License & Maintenance Expiry The Web Filter is a subscription-based module. If your Software Maintenance has expired, the module may deactivate. License Tile to verify the status.

If you are running , GFI has deprecated the old categorization protocol. Versions 9.3+ use a newer, more stable API.