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

Here’s a useful, concise fix for the issue:

"Categorization is disabled"

Misconfiguration can make it seem like web filter is inactive. Here’s a useful, concise fix for the issue:

Verify that the system running Kerio Control has sufficient resources. If your system time is incorrect or you

The filter uses a token that expires every 21 days. If your system time is incorrect or you are using blocked DNS servers, the "Invalid Authorization" error may trigger. Ensure your is synced with an NTP server. Check the Error Log for "Invalid Authorization" messages. Manual Activation Manual Activation Last updated: October 2025 – Valid

Last updated: October 2025 – Valid for Kerio Control 9.4.x and GFI Kerio Control 10.x.

: 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