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。

Learn how to use your Outlook inbox effectively with Microsoft Support's training resources.

Use the XLOOKUP function when you need to find things in a table or a range by row. For example, look up the price of an automotive part by the part number, or find an employee name based on their employee ID. With XLOOKUP, you can look in one column for a search term, and return a result from the same row in another column, regardless of which side the return column is on.

Get productive quickly with Microsoft 365 videos and tutorials. Explore Microsoft 365 training guides and tips to collaborate with anyone, anywhere.

These steps can help resolve the most common issues when you receive an Excel not responding error, Excel hangs or freezes when you launch it, or open an Excel workbook.

One way you can change the style of a document is by adding a new text font. To add a font to Word, download and install the font in Windows, where it will become available to all Microsoft 365 applications.

How to find and remove duplicates in Excel. Filter for unique values in large or small datasets to clean up your worksheets and workbooks.

Learn how to join a Microsoft Teams meeting by link, calendar, channel, chat, or by calling in.

Create a new folder when saving your document by using the Save As dialog box. With your document open, click File > Save As.

Find everything you need to manage your Xbox account, profile, and more.