当安装新应用、驱动程序或 Windows 更新以及当手动创建还原点时，会使用系统还原生成还原点。 还原不会影响你的个人文件，但会删除生成还原点后所安装的应用、驱动程序和更新。

To find downloads on your PC: Select File Explorer from the taskbar, or press the Windows logo key + E.

Download information. The following files are available for download from the .NET Download site: Download the Microsoft .NET Framework 4.8 offline installer package now.

Windows Hello 是一种快速、安全、登录到 Microsoft Windows 设备的方式，面部识别使它更加轻松。 确保其安全的一个重要部分是，面部识别需要确信它在相机中看到的面部是活人，而不是照片或其他图像。

If you're running Windows 8.1 or earlier, or if your PC doesn't meet the minimum system requirements to run Windows 11, consider moving to a new Windows 11 device. Find a PC that meets your needs. Set up your Microsoft account to transfer files and favorites. One account connects your device across Microsoft apps and services like Microsoft 365, OneDrive, Edge, and Microsoft Store.

Microsoft Defender is a security app that helps people and families stay safer online with malware protection, web protection, real-time security notifications, and security tips.Microsoft Defender is included in a Microsoft 365 Family or Personal subscription and works on your phone (Android or iOS), PC, and Mac.

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按“Xbox”按钮 打开导航页。 在“配置文件和系统”下，选择“设置”。 在“设备和连接”下，选择“控制器和耳机”。 在控制器的屏幕上，选择“配置”。 仔细查看控制器上每个按钮的当前映射。 还可以将控制器还原到其默认设置，以将控制器设置回其原始按钮映射。

Introduction. This article describes an update for Microsoft .NET Framework 4.8 on Windows 10, version 1709, Windows 10, version 1803, Windows Server, version 1803, Windows 10, version 1809 and Windows Server, version 1809 and Windows Server 2019.

Argument name. Description. lookup_value (required). The value you want to look up. The value you want to look up must be in the first column of the range of cells you specify in the table_array argument. For example, if table-array spans cells B2:D7, then your lookup_value must be in column B.. Lookup_value can be a value or a reference to a cell.. table_array (required)