Kerio Control Web Filter Is Not Activated Categorization Is Disabled Fixed | TESTED – 2025 |

"DNS response timeout, Kerio Control Web Filter categorization disabled"

/opt/kerio/ctrl/bin/kerio-control-web-filter --uninstall /opt/kerio/ctrl/bin/kerio-control-web-filter --install "DNS response timeout

Poor DNS performance often causes "Invalid Authorization" errors. Configuring reliable external DNS servers for Zvelo-specific traffic is a primary fix. Navigate to section in the Kerio Control Web Admin . Enable Custom DNS forwarding . "DNS response timeout