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。

Get help for the account you use with Microsoft. Find how to set up Microsoft account, protect it, and use it to manage your services and subscriptions.

Learn how to unlock your Microsoft account and resolve 'account has been locked' error message.

Add or remove items from an existing drop-down list (also called a drop-down menu or drop-down box).

Keyboard shortcuts are keys or combinations of keys that provide an alternate way to do something you'd typically do with a mouse. Here’s the list for the new Microsoft Edge and Microsoft Edge for Mac.

Download Office language interface packs (LIP) By pressing submit, your feedback will be used to improve Microsoft products and services.

Learn how to manage your Microsoft devices. Add, remove, register, or rename a device on your Microsoft account.

Learn how to locate, install, and share files with custom fonts compatible with Microsoft Office applications.

Your PC can run Windows 11 if it meets the minimum system requirements specified by Microsoft.

Get started with basic tasks in Excel such as opening a workbook, entering and formatting data, calculating data, and trying some quick analysis features..