How to use the COUNT function in Excel to count the number of cells that contain numbers, and to count numbers within a list of arguments.

Note: If you receive a prompt asking whether to allow the app to access your camera (iOS) or to allow the app to take pictures and record video (Android). select Allow so the authenticator app can access your camera to take a picture of the QR code in the next step.If you don't allow the camera, you can still set up the authenticator app as described in Manually add an account to the app.

Get help with signing in, changing passwords, creating and sending mail, deleting mail, creating folders, and more in Outlook on the web.

Learn how to get Outlook set up to work with Microsoft 365, POP, IMAP, or Microsoft Exchange-based email accounts.

Windows の回復オプションについて説明します。 PC を初期状態に戻す方法、以前のバージョンの Windows に戻す方法、メディアを使って Windows を再インストールする方法を説明します。

Learn how to view, manage, and delete cookies in Microsoft Edge.

In the new Teams, you can switch between apps, respond to chat messages, and join meetings and calls more quickly while using less battery and memory.

How to create or edit your Outlook signature for email messages. Include your signature, text, images, electronic business card, and logo.

This article explains how to connect your PC to your Xbox One console.

If you see an unexpected keyboard layout or language, this article helps you set things back to the language you want to use.