Local definition files or cloud-connect cache files on the Kerio box have become corrupted. Step-by-Step Solutions to Fix the Error
Use this checklist to systematically verify the fix: Local definition files or cloud-connect cache files on
Resolving the "Kerio Control Web Filter is Not Activated, Categorization is Disabled" Error License & Maintenance Expiry The Web Filter is
This disables the "Reliability detection" feature that turns off the filter during ISP instability. support.keriocontrol.gfi.com 3. License & Maintenance Expiry The Web Filter is a subscription-based module. If your Software Maintenance has expired, the module may deactivate. License Tile to verify the status. Check that the DiaServerUrl in /opt/kerio/winroute/winroute
Check that the DiaServerUrl in /opt/kerio/winroute/winroute.cfg is properly set, or simply rebooting the firewall often triggers a new token request. Summary of Fixes Probable Cause Web Filter Inactive License Expired / Unchecked Check Web Filter checkbox in Content Filter "Invalid authorization" Log Zvelo Token Expired Ensure Internet stability, wait 24hrs for update "DNS response timeout" Log DNS Issues / ISP Block Change DNS to 1.1.1.1, Disable Reliability Filters not updating Connectivity Issues Check firewall rules for Zvelo traffic (HTTP/HTTPS) Conclusion
: Through the SSH console, verify that the DiaServerUrl in /opt/kerio/winroute/winroute.cfg is set to v4.url.zvelo.com . Phase 3: Technical Fix via SSH
If you are seeing the error in your Kerio Control dashboard, your firewall's ability to restrict or monitor internet content based on URL categorization is not working. This is a critical issue for businesses relying on content filtering for security and productivity.