症状
当Microsoft 365 付费订阅尝试续订时，许可证会失败，并最终显示一个红色栏，指出订阅是未经许可的。
Message 1:Couldn't Verify Subscription
We couldn't verify your Office 365 subscription, so most features of <application> have been disabled. Please make sure your're connected to the internet and restart your application.
Message 2: Application (Unlicensed Product)
原因
计算机中缺少 Windows SPP 服务的组件。
决议
运行系统文件检查器以修复任何缺失的文件。 请按照下文中的步骤进行操作。