重要: Microsoft サポートと回復アシスタントの機能は、ヘルプの取得に移行しています。移行が完了するまで、お客様は Microsoft サポートおよび回復アシスタント 内のこれらの機能に引き続きアクセスできます。

Tip: If you believe someone has acquired your payment info, contact your bank or your payment provider to prevent more charges. Tell them your credit card has been stolen or compromised - If you only dispute the charges, there's nothing to prevent the fraudulent charges from happening again.

公式 Microsoft サポートに問い合わせるための連絡先情報を提供するウェブページです。

Learn more about updates for Windows 10 version 1903, including improvement and fixes, any known issues, and how to get the update.

Why some files won't open in Internet Explorer. Internet Explorer uses add-ons such as Adobe Reader to view some files in the browser. If a file that needs an add-on won't open, you might have an older version of the add-on, which needs to be updated.

Learn more about premium features in Outlook.com available to Microsoft 365 Home and Microsoft 365 Personal subscribers.

Узнайте о параметрах восстановления в Windows. Узнайте, как вернуть компьютер в исходное состояние, вернуться к предыдущей версии Windows или переустановить Windows с носителя.

When you start a focus session, a focus timer will appear on screen. To use additional focus tools in the Clock app, expand the focus timer to get the full view of the Clock app.

Review the warranty terms, check your warranty status, and learn about the protection plans for your Microsoft device or accessory.

Find Microsoft Excel help and learning resources. Explore how-to articles, guides, training videos, and tips to efficiently use Excel.