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

If the issue persists after following the steps above, collect debug logs ( Web Filter → Diagnostics → Create debug log ) and contact GFI Support, referencing “Web Filter module inactive – categorization disabled.”

If the firewall cannot reach v4.url.zvelo.com due to slow internet or ISP blocks, it marks the service as unreliable. If the issue persists after following the steps

: Kerio uses Zvelo for website categorization. The security tokens for this service expire every 21 days. If they fail to renew—often due to custom DNS settings—the filter will show as "not activated". Step-by-Step Solutions 1. Verify License and Enable the Filter If they fail to renew—often due to custom

typically indicates that the firewall has lost connection to the external categorization service (Zvelo) or has a licensing/reliability issue support.keriocontrol.gfi.com Primary Causes and Solutions 1. Connection Reliability Detection Connection Reliability Detection