在 Windows 中查找 BitLocker 恢复密钥 - Microsoft 支持
了解在 Windows 中查找 BitLocker 恢复密钥的不同方法，并了解如何在系统上激活 BitLocker。
Play a CD or DVD in Windows Media Player - Microsoft Support
Learn how to play different type of CDs and DVDs in Windows Media Player.
Office 2021 and Office LTSC for Windows and Mac FAQ
Find answers to frequently asked questions about Office 2021 and Office LTSC for Windows and Mac on the official support page.
Applies To:
Office 2021, Office 2021 for Mac
Repair an Office application - Microsoft Support
Repair broken Office app installations. Depends on your Office installation type (Click-to-run or MSI-based), you'll see the following options to proceed with the repair.
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 Professional 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 Professional 2019, Project Standard 2019, Publisher 2019, Visio Professional 2019, Visio Standard 2019, Office 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, Office 2016, Microsoft 365 for home, Office for business, Office 365 Small Business, Microsoft 365 admin, Office 365 operated by 21Vianet, Office 365 operated by 21Vianet - Small Business Admin, Office 365 operated by 21Vianet - Admin, InfoPath 2013, Office 365 Germany - Enterprise, Office 365 Germany - Enterprise admin
Introducing Microsoft Phone Link and Link to Windows
Your Phone is now Microsoft Phone Link! Learn more about our recent name change for our PC and Android mobile apps.
Create films with a video editor - Microsoft Support
Learn how to use Clipchamp to create, edit, and share your own custom videos.
Account help
Get help for the account you use with Microsoft and learn how to set up, protect and manage your services and subscriptions.
Meet Windows 11 - Microsoft Support
Make the everyday easier with Windows 11. When there's a lot to do, Windows 11 helps you get it done. With intuitive navigation and new multitasking tools, it brings you the performance you want and the security you need.
Manage cameras with Camera settings in Windows 11
Configure cameras In Camera settings, you can set default settings for each camera. The settings are stored for each camera and each user account—they don't synchronize between multiple Windows devices.
Protect a worksheet - Microsoft Support
To help improve your privacy in Excel, a password adds protection to worksheets to help prevent others from changing, moving, or deleting important data.
Applies To:
Excel for Microsoft 365, Excel for the web, Excel 2021, Excel 2019, Excel 2016