Learn how to upgrade from Windows 10 Home to Windows 10 Pro or Windows 11 Home to Windows 11 Pro, including how to use a valid product key or the Microsoft Store.

Contact Microsoft Support. Find solutions to common problems, or get help from a support agent.

There are a number of possible explanations for why verification codes don't always arrive. Read through the list of the most common causes, and see if any of them apply to you, or use our troubleshooter to help guide you.

You can block messages from specific email addresses or domains from reaching your inbox. When you add an email address or domain to your blocked senders list, Outlook automatically moves messages from that sender to the Junk Email folder.

Learn how to navigate Windows using keyboard shortcuts. Explore a full list of taskbar, command prompt, and general Windows shortcuts.

Probieren Sie diese Lösungen aus, wenn Sie sich nicht bei Ihrem Outlook.com-, Hotmail-, Live- oder MSN-E-Mail-Konto anmelden können oder nicht sicher sind, wie Sie sich an- oder abmelden.

如何将 IF 函数 (与 Excel 中) AND、OR 和 NOT 函数结合使用，以在给定值之间进行逻辑比较。

Learn how to connect a Bluetooth device in Windows and adjust Bluetooth pairing settings.

System requirements and setup steps for the Phone Link app

Learn how to redeem a Microsoft/Xbox gift card or other code on your mobile device, Windows device, or Xbox console.