Kerio Control Web Filter Is Not Activated Categorization Is Disabled Fixed Jun 2026

Kerio Control is a popular network security and firewall solution that provides robust protection for organizations. One of its key features is the Web Filter, which allows administrators to control and monitor internet access for users within the network. However, sometimes the Web Filter may not activate properly, or categorization may be disabled, leading to reduced functionality. In this write-up, we will explore the possible causes of these issues and provide a step-by-step guide on how to resolve them.

Restart the web filter service:

: Kerio Control sends automatic DNS queries to update servers. If it fails to receive a response 10 times within 1 minute, it marks the Web Filter as "unreliable" and disables categorization. Invalid Authorization : This often stems from an expired Kerio Control is a popular network security and

🚨 Common mistake: Web filter is off in the rule that matches user traffic. In this write-up, we will explore the possible