重新安装 Windows - Microsoft 支持
了解如何在电脑上重新安装 Windows，以及安装 Windows 后激活的工作原理。
Install Quick Assist - Microsoft Support
Do you need some help installing Quick Assist? For the best experience, download and install the new version of the Quick Assist app from Microsoft Store. If you have problems installing Quick Assist, here are some steps to try to get it installed and working properly.
Activar Windows - Soporte técnico de Microsoft
Obtenga información sobre cómo activar Windows con una clave de producto o una licencia digital, comprobar el estado de activación y vincular su cuenta de Microsoft.
修复 Microsoft Store 应用出现的问题 - Microsoft 支持
如果你使用的是 Windows 11，并在使用 Microsoft Store 中的应用时遇到问题，请考虑这些更新和修复程序。 首先，登录到你的 Microsoft 帐户。 接下来，按照显示的顺序实施这些可能的解决方案。
对 Office 使用产品密钥 - Microsoft 支持
如果通过 Microsoft 工作区折扣计划 购买了 Microsoft 365. 如果通过雇主的 工作区折扣计划(以前称为家用许可计划) 权益安装 Office 专业增强版、Visio Professional 或 Project Professional，请在安装产品后输入产品密钥。
Applies To:
Excel for Microsoft 365, Word for Microsoft 365, Outlook for Microsoft 365, PowerPoint for Microsoft 365, Access for Microsoft 365, OneNote for Microsoft 365, Publisher for Microsoft 365, Visio Plan 2, Excel 2021, Word 2021, Outlook 2021, PowerPoint 2021, Access 2021, Project Standard 2021, Publisher 2021, Visio Professional 2021, Visio Standard 2021, Office 2021, OneNote 2021, Excel 2019, Word 2019, Outlook 2019, PowerPoint 2019, Access 2019, Project Standard 2019, Publisher 2019, Visio Professional 2019, Visio Standard 2019, Office 2019, Excel 2016, Word 2016, Outlook 2016, PowerPoint 2016, OneNote 2016, Project Professional 2016, Project Standard 2016, Publisher 2016, Visio Professional 2016, Microsoft 365 for home, InfoPath 2013
Optimizations for windowed games in Windows 11
How to improve gaming on your Windows 11 PC by making use of the optimization for windowed games settings.
Download and install or reinstall Microsoft 365 or Office 2021 on a PC ...
Learn how to install, reinstall, or activate Microsoft 365 or Office 2019 on a PC or Mac.
Applies To:
Office 2021, Office 2021 for Mac, Office 2019, Office 2019 for Mac, Microsoft 365 for home, Office for business, Office 365 Small Business, Microsoft 365 admin, Office 365 operated by 21Vianet, Office 365 operated by 21Vianet - Admin, Microsoft 365 for Mac, Office 365 Germany - Enterprise, Office 365 Germany - Enterprise admin
Find your Office product key - Microsoft Support
Learn how to locate your Microsoft Office product key, which allows you to activate and use your Office products without requiring a Microsoft account.
在 Windows 中手動更新驅動程式 - Microsoft 支援服務
瞭解如何在Windows中更新驅動程式，裝置管理員更新或重新安裝驅動程式。
忘れてしまった Microsoft アカウントのパスワードをリセットする
Microsoft アカウントパスワードをリセットまたは変更する方法について説明します。 忘れた Microsoft アカウントのパスワードに関するヘルプを表示します。
Applies To:
Microsoft account dashboard