Microsoft アカウントにサインインするためのエイリアスを使用した Microsoft アカウントのメール アドレスまたは電話番号を変更する方法について説明します。

Learn how to join a Microsoft Teams meeting by link, calendar, channel, chat, or by calling in.

Learn how to redeem your Microsoft Rewards points for a huge variety of great products and sweepstakes.

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

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.

Microsoft アカウントで通常とは異なるアクティビティに関するメールを受け取った場合、または他のユーザーがアカウントを使用している可能性が心配な場合は、[最近のアクティビティ] ページに移動します。過去 30 日間に Microsoft アカウントにサインインしたすべての日時と共に、デバイス ...

Outdated software can cause problems with a Windows upgrade, so removing old or nonessential applications can help. If you plan to reinstall the application later, make sure you have the installation media and all required activation information before removing it.

Learn how to receive a refund or exchange for items purchased from Microsoft.

A Microsoft account gives you access to Microsoft products and services with just one login.

Designed by media lovers for media lovers. Windows Media Player 12—available as part of Windows 7, Windows 8.1, and Windows 10*—plays more music and video than ever, including Flip Video and unprotected songs from your iTunes library!