Learn how to activate Windows using a product key or digital license, check your activation status, and link your Microsoft account.

iOS Android To install Authenticator on your iOS device Scan the QR code or download and install Authenticator from the Apple app store.

注意 Microsoft Authenticator 不适用于 电脑或 Mac，因为验证器应用是出于安全原因为智能手机设计的。 了解详细信息。 Microsoft不再支持超过一年的 Authenticator 版本。 始终使设备保持最新状态。 中国用户应 了解如何在中国下载和使用 Microsoft Authenticator。

Uninstall from the Start menu Select Start > All apps and search for the app in the list shown. Press and hold (or right-click) on the app, then select Uninstall. Uninstall in Settings Select Start > Settings > Apps > Installed apps . Find the app you want to remove, select More > Uninstall.

Learn how to install, reinstall, or activate Microsoft 365 or Office 2024 on a PC or Mac.

Windows 11 Windows 10 There are several different kinds of keyboards for PCs. The most common type is a physical, external keyboard that plugs into your PC. But Windows has a built-in Accessibility tool called the On-Screen Keyboard (OSK) that can be used instead of a physical keyboard. You don't need a touchscreen to use the OSK. It displays a visual keyboard with all the standard keys, so ...

How to create or edit your Outlook signature for email messages. Include your signature, text, images, electronic business card, and logo.

If you already had a Microsoft 365 subscription and did not purchase it from the iOS app, you can manage it at: https:⁠//account.microsoft.com/services If you purchased a Microsoft 365 Personal subscription from the iOS app, go to Settings > [your name] > Subscriptions.

联系支持人员 有关 Microsoft 帐户和订阅的帮助，请访问 帐户和计费帮助。 如需技术支持，请转到 联系 Microsoft 支持人员，输入问题并选择“ 获取帮助 ”。 如果仍然需要帮助，请选择“ 联系支持人员 ”以转至最佳支持选项。 管理员 管理员应查看 OneDrive 管理员帮助 、 OneDrive 技术社区 或联系 ...

Learn how to install Office 2021, 2019, or 2016 on your PC or Mac.