Learn Excel skills from beginner to advanced with video tutorials, templates, and tips from Microsoft Support.

If you need help with Outlook.com, you can read our self-help content, or get support via email.

Erfahren Sie, wie Sie eine Verbindung mit einem WLAN-Netzwerk in Windows herstellen und Ihre aktuellen Netzwerkverbindungen verwalten.

Multiple IF functions can be nested together to allow for multiple criteria. The Excel IF function statement allows you to make a logical comparison between a value and what you expect by testing for a condition and returning a result if True or False.

Note: This article explains the minimum system requirements for running Windows 11 on a PC. Minimum system requirements are designed to provide a great computing experience across a variety of devices, now and into the future.

Internet Explorer 11 support ended on June 15, 2022. Switch to Microsoft Edge for a faster, more secure and more modern web browsing experience.

Learn about the recovery options in Windows. Find out how to reset your PC, go back to a previous version of Windows, or use media to reinstall Windows.

Here are some solutions to common problems with the new Microsoft Edge . If Microsoft Edge keeps crashing. If you can't open Microsoft Edge, or if it opens briefly and then closes, or if you’re unable to open specific webpages, here are some things you can try.

“高级启动选项”屏幕使你可以在高级疑难解答模式下启动 Windows。 你可以访问该菜单，方法是打开计算机，然后在 Windows 启动之前按 F8 键。 某些选项（如安全模式）将以限定状态启动 Windows，其中只会启动空白的基本内容。

Vous pouvez modifier l’apparence de la liste des messages et du volet de lecture dans Outlook. Les messages électroniques dans la liste des messages peuvent être affichés sous forme de messages individuels ou regroupés par conversation.