Kerio Control Web Filter Is Not Activated Categorization Is Disabled Hot 2021 Jun 2026

Categorization often fails due to an "Invalid Authorization" error, which usually means the Zvelo key token (valid for 21 days) has expired or cannot be refreshed.

To resolve this issue, we recommend:

. By default, if Kerio Control fails to reach update servers 10 times in 1 minute, it disables categorization. support.keriocontrol.gfi.com Immediate Hotfix (via SSH) Categorization often fails due to an "Invalid Authorization"