Learn how to use antivirus protection in Windows Security to protect your Windows PC against malware, viruses, and other threats.

了解如何在电脑上重新安装 Windows，以及安装 Windows 后激活的工作原理。

Learn what version of Outlook you're using, and get link for setup, how to import and export email, contacts, and calendar.

Learn how to access Windows device security settings in Windows Security to help protect your device from malicious software.

Learn what to do when you see a warning message that your device does not meet Windows 11 minimum system requirements to upgrade.

如果麦克风功能出现问题，则以下信息可以帮助你排除故障和解决问题。 确保应用有权访问麦克风. 如果在更新麦克风后未检测到Windows 11，您可能需要授予应用使用它的权限。

Hier erfahren Sie, wie Sie das Kennwort Ihres Microsoft-Kontos ändern oder zurücksetzen. Erhalten Sie Hilfe bei einem vergessenen Microsoft-Konto Kennwort.

Learn how to block someone or add email addresses to the safe senders list in Outlook on the web.

Discover how to earn Microsoft Rewards points through various activities and redeem them for exciting rewards.

Get troubleshooting steps for when you can't sign in to the Xbox app.