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

Office または Microsoft 365 を購入したときにプロダクト キーが付属していた場合は、使用している製品に対応する以下の Web サイトのいずれかにプロダクト キーを入力します。

Windows 11でアクティブ化の状態をチェックするには、[スタート] ボタンを選択し、[システム > 設定] を選択し、[ アクティブ化 ] を選択します。 アクティブ化の状態が [アクティブ化] の横に表示されます。[設定] でアクティブ化の状態を確認する

Use the Windows Quick Assist app to get help with a computer problem from family or friends or help them out. Quick Assist uses a remote connection, so remember to only use it with people you trust, since they can see your computer screen or control your PC (if you allow it).

Explore subscription benefits, browse training courses, learn how to secure your device, and more.

Windows メディア プレーヤーは、Windows に付属する組み込みのマルチメディア プレーヤーです。 信頼性が高く広く使用されているアプリケーションですが、ユーザーはエラーや問題を随時発生する可能性があります。

Most software that you buy directly from Microsoft, like Office, Windows, and Xbox games, comes as a digital download that you can download, install, or reinstall.

Press Ctrl + Alt + Delete to open Task Manager.If you don’t see Task Manager after pressing Ctrl + Alt + Delete, press Ctrl + Shift + Esc to open Task Manager.. If Task Manager flickers along with everything else on the screen, a display driver is probably causing the problem.

To increase security and performance, Windows 11 in S mode only runs apps from the Microsoft Store. If you want to install an app that isn't available in the Microsoft Store, or if you have Windows 10 Pro, Enterprise, or Education and want to upgrade to Windows 11, you'll need to permanently switch out of S mode.

For fast and simple editing, we've added Clipchamp as the official Microsoft video editor. Microsoft Clipchamp comes preinstalled on Windows 11 devices. To open Clipchamp, go to the search box on the taskbar, type Clipchamp, and select it from the results.Or you can select Start , then select All apps and scroll down to find Clipchamp in the list of apps.