Type of account. Work or school account assigned by your organization and what you use to sign in to Microsoft 365 or Exchange Online at work or school. Microsoft account for accounts where Microsoft is the provider, such as an Outlook.com, Hotmail.com, Live.com, or MSN.com account. Third-party accounts such as a Google, iCloud, Yahoo, POP, or IMAP account

If you can't find a file on your computer or you accidently modified or deleted a file, you can restore it from a backup (if you're using Windows backup) or you can try to restore it from a previous version.Previous versions are copies of files and folders that Windows automatically saves as part of a restore point.

A BitLocker recovery key is needed when BitLocker can’t automatically unlock an encrypted drive in Windows. This key, which is a 48-digit number, is used to regain access to the drive.

How to redeem a gift card, Xbox download code or token. Both Microsoft and Xbox gift cards and download codes and tokens work the same way: once redeemed to your Microsoft account, you can spend your balance at Microsoft Store online, on Windows or Xbox, and you can get downloads for the latest apps, games, movies, TV shows, and Surface, Xbox, and accessories.

Note: UEFI passwords are used primarily by enterprises and IT professionals to limit the types of changes that employees can make to their devices.If you're part of an enterprise, contact your IT administrator if you have any questions or issues with your UEFI password. If you aren't part of an enterprise and choose to create a UEFI password, make sure to document your password in a safe place.

Lithium-ion batteries wear out over time, which can result in a battery not holding a charge for as long as it did when it was new. Keeping the battery charged to 100% all the time can cause it to deteriorate faster.

提示：如果在选择应用启动器后看不到SharePoint 应用，可以通过选择“ 更多应用”或使用窗口顶部附近的“搜索”框来搜索 SharePoint 来找到它。 有关详细信息，请参阅 从何处登录 Microsoft 365 。

Windows 11, version 21H2; October 8, 2024—KB5044280 (OS Build 22000.3260) September 10, 2024—KB5043067 (OS Build 22000.3197) August 13, 2024—KB5041592 (OS Build 22000.3147)

This is a subscriber-only, Microsoft 365 feature. Find your version. Design ideas for one photo Applies to: PowerPoint for Microsoft 365 Current Channel: Version 1511 or later Semi-Annual Enterprise Channel: Version 1602 or later Multiple photos, color extraction, and facial recognition

Contact Microsoft Support. What's new. Surface Pro; Surface Laptop; Surface Laptop Studio 2