Web Filter categorization disabled. Serial number: ko-197974
If a traffic rule prevents the appliance from reaching the update servers, it cannot validate the Web Filter license.
This should be a and is a temporary measure to restore service while you investigate DNS or network stability. The web filter will automatically resume normal operation after one hour if the underlying issues are resolved.
: Ensure your license includes the "Kerio Control Web Filter" module. GFI Support 4. Firewall Blocking Update Servers
Regularly review your Kerio Control license portal and automate updates – a healthy web filter is a silent guardian that never needs emergency resuscitation. Web Filter categorization disabled
Before changing technical configurations, ensure your Web Filter subscription is valid. Log in to the . Navigate to Dashboard or Status > Subscription . Locate the Kerio Control Web Filter section.
You must restart Kerio Control after changing these DNS settings to clear the cached status. 2. Disable "Reliability Detection" (SSH)
One of the most common issues network administrators face with Kerio Control is opening the administrative interface to find that the is not activating, or that URL categorization is disabled . This state prevents the enforcement of browsing policies, leaving the network vulnerable or unmanaged.
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The Kerio Control Web Filter relies on a third-party categorization database, typically from , to analyze and classify web content. For the filter to work, your Kerio Control server must maintain a valid license and be able to reach the licensing and categorization servers. When it fails, the system disables the filter, often logging the messages you see. The error can arise from several common issues:
Don’t let a disabled web filter leave your network exposed. Use this guide to diagnose, repair, and prevent the problem from returning.
The Web Filter relies on fast and reliable DNS resolution. Using ISP-provided DNS can sometimes cause v4.url.zvelo.com requests to fail. Go to > DNS . Set your DNS servers to public, reliable DNS providers. Cloudflare: 1.1.1.1 and 1.0.0.1 OpenDNS: 208.67.222.222 and 208.67.220.220 . Apply settings and restart the Kerio Control engine. 3. Disable Reliability Detection (SSH Method)
Would you like the exact CLI commands for a specific Kerio Control version (e.g., 9.2, 9.4)? The web filter will automatically resume normal operation
With these details, I can provide a more targeted configuration fix. Share public link
Web Filter categorization disabled. Serial number: ko-197974
The operational stability of the network perimeter was recently compromised by a critical failure within the Kerio Control environment. The web filtering engine—a primary line of defense against malicious domains and productivity drains—rendered itself inert. This was manifested through a specific error state: the web filter was marked as "not activated," and the underlying content categorization database was effectively disabled. This document provides a deep technical analysis of the failure mechanism, the diagnostic process, and the permanent remediation strategy employed to restore service integrity.
Execute the following command to disable detection: ./tinydbclient "update SiteFilter set DetectReliability=0" Restart the service: /etc/boxinit.d/60winroute restart . Firewall Blocking Update Servers Regularly review your Kerio