Kerio Control Web Filter Not Activated: Categorization Disabled
Ensure the filter hasn't simply been toggled off in the WebAdmin interface: Navigate to Content Filter Applications and Web Categories Enable Kerio Control Web Filter is checked and click GFI Support Are you seeing specific DNS response timeout errors in your logs, or is the license itself showing as
Confirm connectivity to update servers
If the database fails to update, the appliance cannot resolve the update server.
Reboot the Appliance: After updating DNS settings, a reboot is often necessary to refresh the token transfer from Kerio internal servers. 4. Verify License Status Ensure outbound HTTPS is allowed from the Kerio
Kerio Control needs to communicate with the external categorization service to function.
If tests fail:
Last updated: October 2025 – Compatible with Kerio Control 9.4.x and 10.x.