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获取 Windows 操作系统的官方支持和帮助信息，以及如何使用 Windows 的指南。

了解如何安装 Windows 7 Service Pack 1 (SP1)。 包含有关如何获取下载、要求和其他内容的信息。 备份重要文件 在安装更新之前，最好将重要的文件、照片和视频备份到外部硬盘、U 盘或云端。

如果发现操作系统运行的不是最新版本的 Internet Explorer，则可使用位于 Internet Explorer 下载中心 的可用链接之一下载它。 其他显示语言 Windows 7 语言界面包 (LIP) 提供了使用最为广泛的用户界面区域的翻译版本。

Right-click the app, select More, and then select Open file location. This opens the location where the shortcut to the app is saved. If there isn't an option for Open file location, it means the app can't run at startup. With the file location open, press the Windows logo key ...

下载更新助手后，你将自动获得这些更新。 如果不想等待自动更新，或者想要检查质量更新（更新更频繁，包括小修补程序和安全更新），则可以自行更新 Windows 10。 如果您是 IT 专业人员，则可以推迟更新。 转到 Windows 10 服务选项。

如果设备从 Windows 10 版本 1909 或更早版本进行更新，则不能手动安装此功能更新启用包。 相反，它捆绑在一起并自动包含在 21H2 Windows 10更新中。 请注意，此方案中不会缩短安装时间。 如何获取此更新

Smart App Control adds significant protection from new and emerging threats by blocking apps that are malicious or untrusted. Smart App Control also helps to block potentially unwanted apps, which are apps that may cause your device to run slowly, display unexpected ads, offer extra software you didn't want, or do other things you don't expect.

If your camera is unable to capture the QR code, you can manually add your account information to the Microsoft Authenticator app for two-factor verification. This works for work or school accounts and non-Microsoft accounts. The codes provided for your accounts aren't case-sensitive and don't require spaces when added into the Authenticator app.

Note: The first time you set up the Microsoft Authenticator app, you might receive a prompt asking whether to allow the app to access your camera (iOS) or to allow the app to take pictures and record video (Android). You must select Allow so the authenticator app can access your camera to take a picture of the QR code in the next step. If you ...