: The filter cannot categorize encrypted traffic without HTTPS decryption enabled under Content Filter > HTTPS Filtering .
If these steps do not resolve the issue, check the ( Logs > System ) for specific error messages regarding the "Categorization engine" or "Update failure."
An incorrect system clock will break secure connections.
The specific appearing in your Kerio Control Error log tab. : The filter cannot categorize encrypted traffic without
: A full disk can prevent the license file from saving. Use SSH to check disk space and clear cache files in /var/lib/firebase if necessary. 4. Troubleshooting Miscategorized or Blocked Sites
This procedure requires access to the Kerio Control console via SSH and a direct edit of the configuration database. It should be performed with caution and ideally outside of business hours, as the final command restarts the firewall service, causing a brief network interruption.
Run the internal database updater to disable reliability checking: ./tinydbclient "update SiteFilter set DetectReliability=0" Use code with caution. Restart the firewall service to apply the change: /etc/boxinit.d/60winroute restart Use code with caution. Step 2: Clear the Zvelo Authorization Token Block : A full disk can prevent the license file from saving
The "Web Filter is not activated, categorization is disabled" error indicates that Kerio Control’s Web Filter module is either inactive, encountering issues, or has been disabled automatically. The Web Filter uses a dynamic worldwide database to rate web page content. A special license is required; without it, the module behaves as a trial version and is automatically disabled after 30 days. When active, it categorizes websites to enforce content rules.
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If the category is blocked (e.g., "Streaming Media"), the connection is dropped. Content rules based on categories are ignored. proceed to the next step.
: Update these settings in Configuration > DNS , then reboot the appliance. 3. Verify License & Activation Status
: Restart the Kerio Control appliance to restore immediate internet access.
When Kerio Control displays the error "Web Filter is not activated" or "categorization is disabled," it typically indicates a breakdown in communication between your firewall and the categorization servers or an expired license component . This effectively disables category-based filtering rules, leaving your network exposed. Primary Causes and Solutions
If the Web Filter module is disabled, you will see the error immediately.
If your license is active but the Web Filter remains disabled, proceed to the next step.