Kerio Control Web Filter Not Activated: Troubleshooting Categorization Disabled
If you are managing network security with GFI Kerio Control, you may have encountered the frustrating alert stating that the or that categorization is disabled . This issue renders your content filtering rules ineffective, allowing restricted traffic to bypass security controls.
For persistent cases where the Web Filter remains disabled despite restored connectivity, you must manually reset the reliability detection mechanism via SSH. This is the definitive fix for the Serial number: ko-197974 error. This is the definitive fix for the Serial
Change your to a reliable provider like Google (8.8.8.8) or Cloudflare (1.1.1.1). Reboot the Kerio Control appliance to clear old DNS cache. Step 3: Disable Reliability Detection (SSH Solution)
Once you have performed the steps above, verify the system is working: Step 3: Disable Reliability Detection (SSH Solution) Once
If Kerio Control fails to contact the Zvelo servers multiple times consecutively within a short period, it disables the filter to prevent network performance issues 1.2.1.
The "Kerio Control Web Filter is not activated. Categorization is disabled" error is serious but entirely solvable. By systematically verifying your license, enabling the module, checking DNS connectivity, and, if necessary, resetting the reliability detection via SSH, you can restore full filtering functionality to your network. Because most modern websites use encryption
: You can disable this "Reliability detection" via the SSH console by navigating to /opt/kerio/winroute and executing: ./tinydbclient "update SiteFilter set DetectReliability=0" .
Once the Web Filter is functioning, ensure that your HTTPS traffic is also filtered. Because most modern websites use encryption, the Web Filter cannot categorize HTTPS content without additional configuration.
Few alarms send a chill down a network administrator's spine like the message that your primary web filtering service is down. When the shows as "not activated" or states that "categorization is disabled," it means your network is vulnerable to every malicious website, productivity-draining platform, and policy-violating corner of the internet. This error effectively renders your carefully crafted content rules useless, as the firewall can no longer identify good traffic from bad.
For maximum protection and accurate statistics, ensure that the Categorize each page regardless of URL rules option is also enabled. This forces the Web Filter to categorize every visited page, which is essential for comprehensive reporting and monitoring.