Kerio Control Web Filter Is Not Activated Categorization Is Disabled Fixed ~upd~ Jun 2026

Upon investigation of the system logs and configuration state, the following cascade of failures was identified:

💡 If your license recently renewed, click Refresh in the License Details section to force a sync with the GFI/Kerio servers.

/opt/kerio/mailserver/konsole service categorization restart

The resolution required a structured approach to restore both the intelligence layer and the enforcement layer. The following steps were executed: Upon investigation of the system logs and configuration

Ensure "Parent Proxy" settings are correct or disabled if not needed.

Mark sat back as the "Top Sites Visited" chart began to populate in real-time. The filter was back on guard, and the noon report was going to be perfect.

A firewall rule, upstream router, or ISP is blocking the specific ports or IPs Kerio needs to validate its status. Mark sat back as the "Top Sites Visited"

The "web filter is not activated" error in Kerio Control is a solvable problem. Most of the time, the fix involves either ensuring your license is up-to-date, adjusting your DNS settings, or applying the SSH command to disable reliability detection.

Web Filter categorization disabled. Serial number: ko-197974

Resolving the "Kerio Control Web Filter is Not Activated, Categorization is Disabled" Error The "web filter is not activated" error in

If you are still experiencing issues with your web filter, please let me know: What of Kerio Control you are running. If you recently renewed or changed your license .

[Kerio Control Firewall] --(DNS Queries Overload/Blocked)--> [ISP DNS Server] | (Dropped Request) | [Cloud Database (Zvelo)]