Is Not Activated Categorization Is Disabled Fixed — Kerio Control Web Filter

Look at the Dashboard license tile to ensure it's not in "Trial" or "Unregistered" mode.

The error message indicates that your firewall cannot connect to the backend URL classification servers. When this happens, your content filtering rules based on web categories (like blocking social media or adult content) stop working entirely.

Some Kerio versions have a hidden reset: Look at the Dashboard license tile to ensure

Web Filter categorization disabled. Serial number: ko-197974

An expired license or trial period (30 days) will automatically disable the Web Filter module. Some Kerio versions have a hidden reset: Web

Upgrade your appliance to the latest version to ensure compatibility with current cloud infrastructure. Summary Verification

Before diving into fixes, confirm the exact error by navigating to: Summary Verification Before diving into fixes, confirm the

The Kerio Control Web Filter requires its own module license. Trial Expiry:

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

The Web Filter uses SSL/TLS certificates to communicate with categorization servers. If your Kerio Control system time is incorrect, the certificate validation will fail. Go to .