: The Web Filter requires a specific license and will automatically disable after a 30-day trial period if not activated.
If you are encountering the error your firewall has likely triggered a safety mechanism that pauses web filtering when it cannot reliably reach the categorization servers. : The Web Filter requires a specific license
: Kerio Control sends automatic DNS check queries to its update servers. If these fail 10 times in a row within one minute, the system deems the filter unreliable and disables categorization. : The Web Filter requires a specific license