Learn how to troubleshoot Windows Media Player errors. Explore resources for general help with Windows Media Player.

Microsoft Teams Web アプリは、Chrome、Firefox、Internet Explorer を含むほとんどのデスクトップ ブラウザーで動作します。

Make the everyday easier with Windows 11. When there's a lot to do, Windows 11 helps you get it done. With intuitive navigation and new multitasking tools, it brings you the performance you want and the security you need.

Learn why it's important to have a backup, and how Windows Backup can help you keep your files and settings safe.

If you already have an account signed in to OneDrive and you want to add or remove another account, you’ll do that in OneDrive Settings.

Learn how to sign in and create app passwords for Microsoft apps and devices that don't support two-step verification.

Learn how to use a health report in Windows Security to manage your device performance and keep your device secure.

了解如何使用产品密钥或数字许可证激活 Windows、检查激活状态，以及链接Microsoft 帐户。

Alternatively, you can install any website by going to the top corner of the browser and select Settings and more … > Apps > Install this site as an app.

Learn about what effect closing a Microsoft account might have on your other apps and services.