Kerio Control Web Filter Is Not Activated Categorization Is Disabled Fixed ((top)) May 2026

By following these steps, you should see the status change to and your categorization rules will resume functioning immediately.

Here is a comprehensive guide to troubleshooting and fixing this issue. 1. Verify License Status and Maintenance

If you are seeing the error in your Kerio Control administration interface, your network's content filtering has essentially been paralyzed. This error prevents the firewall from identifying website categories (like social media, gambling, or malware sites), meaning your custom URL rules won’t work. By following these steps, you should see the

If this fails, you may need to clear the cache via the console by deleting the contents of the /var/winroute/webfilter/ directory (advanced users only). 4. Firewall Rules and Port Access

Toggle the Web Filter "Enable" checkbox to reset the connection. Verify License Status and Maintenance If you are

Ensure that SSL inspection on a parent device isn't interfering with the Kerio appliance's encrypted handshake with GFI/Kerio servers. 5. Correct System Time and Date

Are you seeing any specific in the Kerio Control Error Log when you try to enable the filter? or malware sites)

Check for updates and ensure you are running the most recent build compatible with your license. Summary Checklist Potential Cause Renew SMA or Web Filter subscription. Time Sync Issue Enable NTP and verify the correct Time Zone. DNS Failure Set Kerio to use 8.8.8.8 for system resolution. Server Timeout

Click Update License Info to force the appliance to check in with the GFI servers. 2. Check DNS Resolution on the Firewall

If your Kerio Control is behind another router or ISP firewall, it must be allowed to communicate with the activation servers.