注意: 如果你有多个一次性购买的 Office，并且安装 Office 后在激活时遇到问题，请参阅更改 Office 产品密钥。 如果你遵循软件许可条款中的转移条款，你可以将 Office 移动到另一台计算机，但是必须通过电话将其激活，然后从原来的计算机上卸载 Office。

How does multifactor authentication work? Let's say you're going to sign into your Microsoft account or work or school account, and you enter your username and password.If that's all you need then anybody who knows your username and password can sign in as you from anywhere in the world!

Windows 8.1 reached the end of support (EOS) on January 10, 2023, at which point technical assistance and software updates are no longer provided. If you have devices running Windows 8.1, we recommend upgrading them to a more current, in-service, and supported Windows release. If devices do not meet the technical requirements to run a more current release of Windows, we recommend that you ...

How Microsoft Edge interacts with operating system permissions when sharing your location with a website. Windows can use information such as your IP address, nearby Wi-Fi access points, and GPS data, if available, to estimate your precise or imprecise location coordinates and pass this info to Microsoft Edge.

重要: 新版和经典版 Outlook for Windows的步骤可能有所不同。 若要确定所使用的 Outlook 版本，请在功能区上查找 文件。如果没有“文件”选项，请按照“新 Outlook”选项卡下的步骤操作。如果显示“文件”选项，请选择“经典 Outlook”选项卡。

Find out how to use Game Bar to capture game play, chat with friends, track achievements, and more.

Xbox Support offers help for Xbox, Game Pass, and billing questions. Get advice and customer service in the Xbox Support community.

If the USB recovery drive doesn’t work on your Surface. If you can’t boot from your USB recovery drive or don’t see the Recover from a drive option, you may need to ensure that the boot-from-USB function in the Surface BIOS is enabled or configure the boot order so the USB drive is the first option. For more info, see Boot Surface from a USB device.

注销 Office 后，你可以断开与 OneDrive 之类的服务的连接，删除设置并清除常用文档列表。 可以从任何 Office 应用内注销 Office。 也可以 使用 Web 浏览器 远程注销 Office。

Receive photos, videos, or other kinds of files that you or a friend shares from another device, such as a phone, laptop, or tablet. On your PC, select Start > Settings > Devices > Bluetooth & other devices. Learn how to pair.