Kerio Control Web Filter Is Not Activated Categorization Is Disabled Work Exclusive 95%

This specific error in Kerio Control typically occurs when the firewall loses its connection to the categorization servers or encounters a DNS timeout

The Web Filter uses an external service (Zvelo) which requires a valid authorization token. These tokens expire every 21 days. If your DNS settings prevent the token from renewing, categorization will be disabled. This specific error in Kerio Control typically occurs

: Kerio Control sends automatic DNS check queries to its update servers. If it fails to receive a response 10 times in a row within one minute, it marks the Web Filter as "not reliable" and disables categorization. Temporary Fix : Kerio Control sends automatic DNS check queries

Use the diagnostic tool: Diagnostics → Ping / Traceroute. categorization will be disabled.

3. Database or Update Failure

Kerio Control downloads huge databases of URL categories. If an update failed or the database is corrupted, categorization may disable itself to prevent network slowdowns.