Kerio Control Web Filter Is Not Activated Categorization Is Disabled Fixed ((better))

The system reveals its logic: Kerio Control sends automatic DNS queries to reach update servers. If these fail 10 times in a row within a single minute, the filter decides it can't be trusted and shuts down its categorization engine. This is often caused by: DNS Reliability

To fix the issue where the Kerio Control web filter is not activated and categorization is disabled:

| Item | Expected Status | |------|----------------| | License → Web Filter | Licensed | | Web Filter → Categorization | Enabled (green) | | Last update | Within 24 hours | | Test a known category | e.g., facebook.com → Shows Social Networking |

Ensure the license is registered to the correct hardware ID. 3. Clear Update Cache Sometimes a corrupted local database stops the activation. Access the Kerio Control or console. Navigate to the storage directory (usually /var/winroute/ ). Remove the contents of the webfilter update folder. Restart the Kerio Control engine. 4. Sync Time and Date The system reveals its logic: Kerio Control sends

Ensure your WAN interface has valid, working DNS servers (e.g., or ISP provided).

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

The error "Kerio Control Web Filter is reported to be not activated, and categorization is disabled" usually stems from (expired tokens) or DNS reliability issues . Fix 1: Resolve Invalid Authorization (Expired Zvelo Tokens) Navigate to the storage directory (usually /var/winroute/ )

Kerio Control is a powerful network security solution, but its URL whitelist and content filtering capabilities depend entirely on an active Kerio Control Web Filter license. When the dashboard displays the error the firewall stops sorting traffic into content categories. This breaks your security policies, bypasses workplace productivity restrictions, and leaves your network vulnerable.

Kerio Control Web Filter is Not Activated: Categorization is Disabled [Fixed]

Go to to check the status of the "Web Filter" module. Go to > DNS .

Kerio Control has a built-in safety mechanism that disables the Web Filter if it fails to reach update servers 10 times in a row within one minute. You can override this via the SSH console : to the Kerio Control console. Navigate to the directory : cd /opt/kerio/winroute

Ensure your upstream ISP modem or router isn't blocking traffic. Kerio Control requires open outbound access for:

If the firewall cannot reach the cloud servers, categorization will fail. Go to > DNS .