Ensure the value v4.url.zvelo.com is correctly set in the configuration file located at /opt/kerio/winroute/winroute.cfg .
Kerio deactivates the filter if 10 consecutive DNS queries fail within one minute. Usually, it tries to re-enable itself after one hour, but a manual restart is often faster. 2. Resolve "Invalid Authorization" Failures Ensure the value v4
Web Filter categorization disabled. Serial number: ko-197974 Ensure the value v4
Execute the following command to disable the reliability check: ./tinydbclient "update SiteFilter set DetectReliability=0" . Restart the service: /etc/boxinit.d/60winroute restart . Ensure the value v4
Ensure your Kerio Control Web Filter license is active. Without a valid subscription, the module defaults to a trial state and eventually disables itself.
If your error log specifically mentions "Invalid Authorization," it likely means the has expired (tokens typically last 21 days).
