Fixed _best_ | Kerio Control Web Filter Is Not Activated Categorization Is Disabled

Ensure your Kerio Control is using reliable DNS servers (like 8.8.8.8 or 1.1.1.1) under Configuration > DNS . 3. Clear the Web Filter Cache

: If online activation fails, you can download a .key file from the Kerio Product Registration page and import it via Configuration Assistant > Register product > Register offline by license file . Phase 2: Fixing Connectivity and DNS Issues Ensure your Kerio Control is using reliable DNS

How to Fix "Kerio Control Web Filter is Not Activated, Categorization is Disabled" Phase 2: Fixing Connectivity and DNS Issues How

If the Web Filter remains disabled due to "Reliability detection" (where the firewall stops checking categorization if it thinks the connection is unstable), you can force it to stay active. Ensure your Kerio Control is using reliable DNS

: Ensure the "Kerio Control Web Filter categories and applications" rule is enabled under Content Filter > Content Rules .

This article provides to permanently fix this issue, ranging from simple licensing checks to advanced command-line resets.