XBOX Update Preview Release Notes | XBOX Support
Hey XBOX Insiders! We are releasing a new XBOX Update Preview to the Beta ring today. Continue reading below to learn all about what's included with this update.
Contact - Microsoft Support
Support for Windows 10 has ended on October 14, 2025. Learn more about your options for Windows 10.
解决 Windows 上的 Game Bar 问题 | XBOX Support
尝试为游戏选择其他显示选项，例如无边框窗口。 游戏可能阻止了自定义键盘快捷方式。 请参阅下面的“为什么我的键盘快捷方式对 Game Bar 不起作用？” 部分。 少数计算机和配件不支持 Windows 徽标键。 有关详细信息，请查看设备制造商的网站。 如果键盘上未内置 Windows 徽标键，则创建一个自 ...
Sign in to Microsoft 365 | Microsoft Support
Learn how to sign in to Office or Microsoft 365 from a desktop application or your web browser.
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, Project Online Desktop Client, Publisher for Microsoft 365, Excel for Microsoft 365 for Mac, Word for Microsoft 365 for Mac, Outlook for Microsoft 365 for Mac, PowerPoint for Microsoft 365 for Mac, OneNote for Microsoft 365 for Mac, Excel 2024, Word 2024, Outlook 2024, PowerPoint 2024, Access 2024, OneNote 2024, Project Professional 2024, Project Standard 2024, Visio Professional 2024, Visio Standard 2024, Office 2024, Excel 2024 for Mac, Word 2024 for Mac, Outlook 2024 for Mac, PowerPoint 2024 for Mac, OneNote 2024 for Mac, Office 2024 for Mac, Excel 2021, Word 2021, Outlook 2021, PowerPoint 2021, Access 2021, Project Professional 2021, Project Standard 2021, Publisher 2021, Visio Professional 2021, Visio Standard 2021, Excel 2021 for Mac, Word 2021 for Mac, Outlook 2021 for Mac, PowerPoint 2021 for Mac, OneNote 2021 for Mac, Office 2021 for Mac, Excel 2019, Word 2019, Outlook 2019, PowerPoint 2019, Access 2019, Project Professional 2019, Project Standard 2019, Publisher 2019, Visio Professional 2019, Visio Standard 2019, Excel 2016, Word 2016, Outlook 2016, PowerPoint 2016, Access 2016, OneNote 2016, Project Professional 2016, Project Standard 2016, Publisher 2016, Visio Professional 2016, Visio Standard 2016, OneNote for Mac, Microsoft 365 for home, Office 365 Small Business, Microsoft 365 admin, Project Online, Microsoft 365 for Mac, Project for Office 365
与我们联系 | XBOX Support
需要有关 XBOX 主机、XBOX 游戏或 XBOX 网络的帮助?了解如何与我们联系。
下载并安装或重新安装 Office 2021、Office 2019 或 Office 2016
如果这是你 第一次 安装 Office，则可能需要先执行一些设置步骤。 展开下面的 “了解详细信息”部分。 但是如果是重新安装 Office，且已兑换了产品密钥并拥有与 Office 关联的帐户，请转到登录 以下载 Office 的部分。
Applies To:
Office 2021, Office 2021 for Mac, Office 2019, Office 2016, Office 2016 for Mac
Download Microsoft Authenticator | Microsoft Support
The Microsoft Authenticator app helps you sign into your accounts when you're using two-step verification.
Find your BitLocker recovery key | Microsoft Support
Summary A BitLocker recovery key is needed when BitLocker can’t automatically unlock an encrypted drive in Windows. This is a 48‑digit number that lets you regain access to your drive.
XBOX Update Preview Release Notes | XBOX Support
Hey XBOX Insiders! We are releasing a new XBOX Update Preview to the Alpha Skip-Ahead ring today. Continue reading below to learn all about what's included with this update.
查找你的 Windows 产品密钥 | Microsoft Support
了解如何查找用于激活的 Windows 产品密钥，以及何时改用数字许可证。
Applies To:
Microsoft account dashboard