How to use a PivotTable in Excel to calculate, summarize, and analyze your worksheet data to see hidden patterns and trends.

Learn how to locate your Microsoft Office product key, which allows you to activate and use your Office products without requiring a Microsoft account.

How to use the FILTER function in Excel to filter a range of data based on criteria you define.

Get a brief explanation about logging on as an administrator and making changes to other user accounts on your computer.

Use VLOOKUP, HLOOKUP, and other functions like INDEX and MATCH to search for and find data based on values you enter. This article gives you a quick VLOOKUP refresher, then links to more.

Get help with using mail, calendar, and contacts on Outlook.com.

How to use the IF function in Excel to make logical comparisons between data values.

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

Learn how to access and manage your Windows sign in options. Use a password, Windows Hello, or a security key to unlock your device.

Outlook 网页版是组织使用的基于 Web 的 Outlook 版本。你需要使用工作或学校帐户登录才能访问此基于 Web 的 Outlook 版本。 你的工作或学校帐户通常由组织中的某人分配给你。