Disabled Work [hot] | Kerio Control Web Filter Is Not Activated Categorization Is

Use stable public DNS servers like Cloudflare (1.1.1.1) or OpenDNS (208.67.222.222) for your custom DNS forwarding.

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.

Fixing this problem requires a mix of . 🛠️ Summary of Quick Fix Workarounds Primary Solution DNS Timeout (Check Failures) Disable Reliability Detection via SSH Expired Zvelo Token Route Zvelo domains through Cloudflare/OpenDNS Expired License Renew GFI Kerio Control Web Filter subscription Emergency Network Freeze Create temporary wildcard Content Rules 🛑 Root Causes Behind the Error 1. The 10-Query DNS Timeout Rule Use stable public DNS servers like Cloudflare (1

Without a valid license, the web filter will not activate. Navigate to .

| Root Cause | Symptoms | Solution | |------------|----------|----------| | Expired License | Web Filter not activated after 30 days | Purchase and apply license | | DNS Issues | Categorization disabled, DNS timeout logs | Configure custom DNS for *.zvelo.com | | Unreliable Categorization | Web Filter disables intermittently | Disable reliability detection via SSH | | Invalid Authorization | Expired Zvelo token in logs | Check DiaServerUrl; reboot after DNS changes | | Manual Disabling | Web Filter checkbox unchecked | Enable Web Filter in Content Filter tab | | ISP Throttling | Slow internet with Web Filter on | Custom DNS forward *.zvelo.com to Google DNS | Fixing this problem requires a mix of

Is your Kerio Control showing an "Invalid Authorization" error specifically, or is it just stuck in a "Disabled" state without further detail? Using Kerio Control Web Filter

No. The free version (limited to 5 users) does not include cloud categorization. Web filtering will always show as disabled. Navigate to

The Web Filter relies on specific DNS lookups to function. Misconfigured DNS servers are a leading cause of "Invalid Authorization" errors.

Leo leaned back. The Kerio box hummed quietly. It wasn't fixed. It was working —despite being broken. And sometimes, that’s the best a sysadmin can hope for.

Check again and click Apply . Manual Database Reset via SSH If the GUI toggle fails, reset the update module via SSH: Connect to Kerio Control via SSH. Stop the Kerio Control service: /etc/boxinit.d/60winroute stop Use code with caution.

hasn't expired, as an expired license will immediately turn off content filtering functions. support.keriocontrol.gfi.com Do you need the specific SSH login commands or help checking your DNS forwarder settings in the admin interface?