網路原則伺服器無法驗證此電腦的安全性更新狀態。系統管理員必須確定 Windows Server Update Services 伺服器可用，並且此電腦上的 Windows Update Agent 已設定為與該伺服器同步處理。

The Network Policy Server was unable to validate the security update status of this computer. An administrator must ensure that a Windows Server Update Services server is available and that the Windows Update Agent on this computer is configured to synchronize with the server.