Navigate to Content Filter > Applications and Web Categories and ensure "Enable Kerio Control Web Filter" is checked. Why This Happens
: The firewall cannot resolve Kerio activation and categorization servers.
: Use traffic rules to drop packets going to known malicious IP subnets.
The error typically occurs when the firewall loses communication with its categorization servers (Zvelo), or if the special module license has lapsed. Common Fixes Check Licensing: Navigate to Content Filter > Applications and Web
Is your currently active?
Because in the end, a good admin doesn't need the filter. He just needs the feeling of the filter—and a really clever script.
The Kerio Control Web Filter relies on DNS to query GFI’s cloud-based database. If your DNS settings are misconfigured, categorization will fail. Go to -> Interfaces . The error typically occurs when the firewall loses
: In the Kerio Control Webadmin Dashboard, verify that the "Kerio Control Web Filter" component shows as active and has not exceeded its download limits.
The firewall must be able to resolve and connect to Kerio's backend servers ( ://kerio.com and Kerio/GFI categorization endpoints).
Kerio Control Web Filter Not Activated: Categorization Disabled Workarounds and Fixes He just needs the feeling of the filter—and
Run the following commands to disable reliability detection:
This guide provides a comprehensive, step-by-step walkthrough to resolve this activation and categorization issue. Primary Root Causes
Before troubleshooting the configuration, ensure your license is active. Go to -> Dashboard . Click on License .
Click again. This action forces the system to restart the filtering module and download fresh classification definitions. 5. Check Firewall Output Rules