Kerio Control Web Filter Is Not Activated Categorization Is Disabled Work

Kerio Control Web Filter Is Not Activated Categorization Is Disabled Work

Before fixing the issue, it is important to understand what "Categorization Disabled" actually means.

Kerio Control does not categorize websites locally on the box; it relies on a cloud-based database (the Kerio Control Web Filter). When a user visits a website, the firewall queries the cloud to determine if the site belongs to a blocked category.

If the system says categorization is disabled or not activated, it means the firewall cannot communicate with the categorization service or the service is disabled within the configuration. Before fixing the issue, it is important to

After fixing the issue, back up your configuration immediately:


| 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. | There are three primary reasons why this status appears:

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There are three primary reasons why this status appears:


When the Web Filter is not activated and categorization disabled:

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