Kerio Control — Web Filter Is Not Activated Categorization Is Disabled Hot !exclusive!

(if option exists in your version) Go to Configuration → Web Filter → Update → Clear Cache or Reset Database .

rm -rf /var/kerio/kerio-control/cache/urlfilter/ Restart the service: (if option exists in your version) Go to

/etc/init.d/kerio-filtering stop Remove the cache directory: | | Firewall rules blocking the appliance itself

curl -v https://download.gfi.com/ curl -v https://update.gfi.com/ Also test the license validation server: | | Time/date sync issue | Certificate validation

| | Typical Symptom | |-----------|----------------------| | Expired or missing license | Web Filter shows "Not Activated" in Dashboard; grace period ended. | | DNS resolution failure | Kerio Control cannot resolve update.gfi.com or category cloud servers. | | Firewall rules blocking the appliance itself | Local policy prevents Kerio Control from outbound HTTPS (port 443). | | Corrupted local cache | Database files for categories are damaged. | | Proxy mode misconfiguration | Using transparent proxy on a non-standard port without proper SSL interception. | | Time/date sync issue | Certificate validation fails if system time is incorrect. | | Version-specific bug | Known issues in older releases (e.g., 9.2.x, 9.3.x). | Part 3: Step-by-Step Troubleshooting Step 1: Verify Web Filter License Status Navigate to: Status → License Information (or Configuration → Licenses ).

Navigate to → Network Rules → Traffic Rules .