Protect your Android, iPhone, Mac, and Windows devices from threats by installing Microsoft Defender. Download Microsoft Defender on your devices either by:

The Microsoft Authenticator app helps you sign into your accounts when you're using two-step verification.

Find out how to submit a request for a refund for a purchase of digital Xbox content.

Microsoft Edge makes it easy to save your passwords as you browse the web. When you enter a new password in the Edge browser on your desktop or mobile device, Microsoft Edge will ask if you want your username and password remembered.

It's easy to attach pictures, files, and other items to your Outlook messages. Outlook keeps track of the documents you’ve recently worked on, whether they're stored on your computer or saved in OneDrive (cloud only).

Decide which documents to recover from an unexpected close, delete recovered files you don't want, or close recovered files to review later.

Learn how to install, reinstall, or activate Microsoft 365 or Office 2019 on a PC or Mac.

OneDrive でアップロードとダウンロードを停止、キャンセル、または一時停止する方法について説明します。 フォルダー OneDrive 選択する OneDrive 内のすべてのフォルダーをコンピューターと同期したくない場合、同期するフォルダーを指定することができます。

Training: Get started with SharePoint in Microsoft 365. At office.com, sign in to SharePoint, then select the SharePoint tile.

Microsoft Edge 新しい Microsoft Edge のホーム ページを変更する方法を次に示します。 Microsoft Edge を開き、[設定など] > [設定] の順に選択します。