Kerio Control Web Filter Is Not Activated Categorization Is Disabled Fixed [portable] Jun 2026

This guide outlines the symptoms, the root causes, and the procedure to permanently fix this issue.

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

Sometimes, custom traffic rules or strict geographic blocking (GeoIP) unintentionally block Kerio Control’s own outbound system traffic. Go to > Traffic Rules . This guide outlines the symptoms, the root causes,

Kerio Control must be able to resolve https://kerio.com (or similar URLs). If DNS is broken, the filter cannot work. Go to .

The subscription license for the web filter is expired, invalid, or not properly registered. If DNS is broken, the filter cannot work

Navigate to the configuration panel in the web administration interface.

The Web Filter is a premium add-on component. If your overall Kerio Control subscription is active but the Web Filter module specifically has expired, categorization immediately shuts down. Log into your Kerio Control Administration interface. Navigate to > License Details . Most of the time

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.

Run this to see if categorization is alive:

Before diving into complex network configurations, verify these common issues:

If incorrect: