Kerio Control Web Filter Is Not Activated Categorization Is Disabled Fixed ((free)) -
The error "Kerio Control Web Filter is reported to be not activated, and categorization is disabled" usually stems from invalid authorization (expired tokens) or DNS reliability issues. Fix 1: Resolve Invalid Authorization (Expired Zvelo Tokens)
Web Filter categorization disabled. Serial number: ko-197974 The error "Kerio Control Web Filter is reported
The realization hit him—the system clock. Because of a recent power flick, the Kerio appliance had lost sync with the NTP server. It thought the year was 2010. The modern security certificates being sent by the Kerio cloud were "from the future" and therefore rejected as invalid. Mark didn't hesitate. He took three quick steps: The Web Filter Module: The policy enforcement agent
Final Checklist: Is It Fixed?
After applying the relevant solutions, verify success: Change DNS Forwarders : Avoid using Google DNS (8
Step 4: Rebuild Database
If you suspect a corrupted database, rebuild it to resolve categorization issues.
- The Web Filter Module: The policy enforcement agent responsible for blocking or allowing traffic based on pre-defined rules.
- The Categorization Engine: The intelligence feed (powered by the Kerio Technologies cloud database or local caches) that labels domains (e.g., "Gambling," "Malware," "Social Media").
Change DNS Forwarders: Avoid using Google DNS (8.8.8.8) as your primary forwarder for this service. Instead, set Cloudflare (1.1.1.1) or OpenDNS (208.67.222.222) as custom DNS servers for the *.zvelo.com domain.
Troubleshooting Steps