To resolve the issue where the Kerio Control Web Filter is reported as not activated and categorization is disabled, you typically need to address underlying DNS or authorization issues. This error often occurs when the firewall cannot reach the Zvelo categorization servers. Immediate Fixes
The error "Kerio Control Web Filter is not activated. Categorization is disabled" is almost always solvable by methodically checking license status, outbound connectivity, DNS, system time, and cache integrity. In 90% of cases, either a expired license, a local DNS misconfiguration, or a corrupted cache is to blame. To resolve the issue where the Kerio Control
Ensure the following services are Running: Go to Configuration → Licenses