Kerio Control Web Filter Is Not Activated Categorization Is Disabled Fixed Link

This fix involves running a few commands via .

Open a terminal/SSH session to your Kerio Control appliance (or use the system tools in the web UI) and ping the GFI/Kerio update servers to confirm outbound connectivity. Step 3: Verify Port and Traffic Rules

The Web Filter relies heavily on DNS to communicate with the Zvelo servers. Incorrect DNS settings are a frequent cause of "Invalid Authorization" errors. This fix involves running a few commands via

Mark started with the basics. He knew the Web Filter relied on a live connection to Kerio’s cloud servers to identify if a site was "Social Media" or "Malware."

The "Kerio Control web filter is not activated, categorization is disabled" error is a clear indicator that your security appliance cannot communicate with the core services it relies on. The fix is methodical: always start with a license verification, then check system time and DNS settings, before moving to more advanced command-line solutions. The final step of disabling reliability detection is a safety net for persistent network stability issues but should not be your only fix. By following this guide, you will diagnose the specific failure point and restore your web filtering to full functionality. Incorrect DNS settings are a frequent cause of

Connect to your firewall appliance using an SSH client (like PuTTY).

He corrected the system time to the current second. NTP Refresh: He forced a synchronization with pool.ntp.org . Service Restart: He toggled the Web Filter off and back on. The fix is methodical: always start with a

Ensure "Kerio Control Web Filter" is checked in Content Filter settings.

The Web Filter uses for categorization. If your DNS cannot resolve *.zvelo.com , the filter disables itself for reliability.

Method 1: Disable Reliability Detection via SSH (Permanent Fix)

Press and hold the on your keyboard, then click on Status > System Health in the left menu.