IMPORTANT This update is not needed and will not be offered if your Windows Recovery Environment (WinRE) meets any of the following conditions: If the WinRE recovery partition does not have sufficient free space.

注意: 某些相机将不会显示在“相机设置”页中。其中包括用于 Windows Hello 人脸身份验证的红外线 (IR) 摄像头、使用 DirectShow 技术（如 DSLR 或运动相机制造商提供的便于将其设备用作网络摄像头的许多应用）的相机，以及不由 Windows 管理的专有相机，例如工业相机和许多网络摄像头。

查找 Windows 7 或 Windows 8.1 的产品密钥. 卸载或重新安装 Windows 7 或 Windows 8.1 时，通常需要产品密钥。 通常，如果购买的是实物 Windows 拷贝，产品密钥应该在标签上或者在 Windows 随附包装盒中的卡上。

Contact Microsoft Support. Find solutions to common problems, or get help from a support agent.

Windows 11, version 23H2 ; July 25, 2024—KB5040527 (OS Builds 22621.3958 and 22631.3958) Preview; July 9, 2024—KB5040442 (OS Builds 22621.3880 and 22631.3880)

Office Lens is an app for all of your Windows devices. It's a great way to capture notes and info from whiteboards, menus, signs or anything with a lot of text--and even images without text.

Ctrl+click the application you selected and click Move to Trash.

若要计算两个日期之间的差值，请使用 datedif 函数。 首先将开始日期放入一个单元格，并将结束日期置于另一个单元格。

要执行此任务. 执行此操作. 添加视频. 选择“视频”>“开始我的视频”。 隐藏预览. 选择“视频”>“隐藏我的预览”。 共享预览. 选择“视频”>“显示我的预览”。 停止共享视频. 选择“视频”>“停止我的视频”。 离开视频². 选择“视频”>“离开视频”。 将呼叫置于保持状态

The Xbox app on PC relies on two Microsoft accounts: the Microsoft Store account, and the Xbox account (your PC gaming account). The Microsoft Store account provides access to owned games, subscription benefits, and other Xbox app purchases made by that account. The Xbox account is used for game streaming access, in-game purchases, achievements, and friends.