Kerio Control Web Filter Is Not Activated Categorization Is Disabled Work Fixed Now

This issue typically occurs when Kerio Control loses connectivity to its categorization servers (Zvelo) or fails internal reliability checks. Quick Fixes

: The system usually attempts to revert to normal operation after one hour. Manual Fix (via SSH) This issue typically occurs when Kerio Control loses

| Misconception | Reality | |---------------|---------| | “I have a valid firewall license, so Web Filter should work.” | Web Filter requires a separate add-on subscription. | | “Categorization disabled means no filtering at all.” | Basic domain/URL blocking still works via custom lists. | | “Restarting the appliance fixes this.” | Only if the service was stuck; licensing and connectivity issues persist. | | “HTTPS inspection must be on for categorization.” | False – categorization works on the domain extracted from SNI or URL, even without full HTTPS decryption. | | | “Categorization disabled means no filtering at all

Web Filter

For network administrators relying on Kerio Control (now part of GFI Software), few error messages are as confusing and disruptive as seeing your web filter refuse to work. You navigate to the section of the admin interface, expecting to see traffic being categorized and blocked according to your policies. Instead, you are greeted by a greyed-out dashboard, inactive rule sets, and the dreaded status indicators: | Web Filter For network administrators relying on