Kerio Control Web Filter Is Not Activated Categorization Is Disabled Work Fix May 2026

Because in the end, a good admin doesn't need the filter. He just needs the feeling of the filter—and a really clever script.

Even if your license shows as valid, the activation token may be corrupted. Because in the end, a good admin doesn't need the filter

Here’s a concise troubleshooting guide to resolve this: Here’s a concise troubleshooting guide to resolve this:

: Go to the Dashboard in the Kerio Control Administration interface to verify the license expiration date. 🛠️ Immediate Fix: Disable Reliability Detection

This error typically occurs when Kerio Control determines that its connection to the (Zvelo) is unreliable, often due to DNS timeouts or expired authorization tokens . When the system fails to reach these servers ten times within a single minute, it automatically disables the Web Filter to prevent it from blocking legitimate traffic by mistake. 🛠️ Immediate Fix: Disable Reliability Detection