Is your license showing as or Expired on the dashboard?
Click the button and accept the security warning.
Open the primary configuration file located at /opt/kerio/winroute/winroute.cfg . Find the DiaServerUrl property. Is your license showing as or Expired on the dashboard
[User Request] ➔ [Kerio Control] ➔ (DNS Timeout / Failure) ➔ ✘ [Zvelo Database Servers] ↓ [Web Filter Disables Categorization] The error is usually caused by:
The error message typically occurs when the firewall cannot reach its external categorization servers or has encountered a licensing/authorization failure . This issue is a common pain point for administrators using the GFI Kerio Control Unified Threat Management (UTM) solution. Core Issue Overview Find the DiaServerUrl property
The consequences of having an inactive web filter and disabled categorization include:
💡 If the error persists, check the Debug Log . Right-click in the log window, select Messages , and enable "Web Filter" and "License" logging to see exactly why the connection is dropping. If you'd like, let me know: What version of Kerio Control are you running? Is your license currently valid or recently expired? Are you seeing any DNS or connection errors in the logs? Share public link Core Issue Overview The consequences of having an
系统时间的正确性至关重要，因为用于数据加密的 HTTPS/TLS 证书对时间偏差非常敏感，一旦错误，防火墙将无法与 GFI 和 Zvelo 的云服务器建立安全连接。
Troubleshooting "Kerio Control Web Filter is Not Activated: Categorization is Disabled"