You can insert a drop-down list of valid entries (also called a drop-down menu or drop-down box) in Excel to make data entry easier, or to limit entries to certain items that you define.

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。

Choose from a variety of Surface devices and accessories to get help.

Xbox Support offers help for Xbox, Game Pass, and billing questions. Get advice and customer service in the Xbox Support community.

Find out how straight-forward it is to schedule remote meetings in Microsoft Teams for both people inside and outside of your organization.

When you use InPrivate tabs or windows, your browsing data isn't saved on your PC once you're done.

How to enable automatic forwarding in new Outlook. At the top of the page, select Settings .

Quickly revisit highlights of your Microsoft Teams meeting recording with the meeting recap. In the meeting recap, the most important parts of a meeting-the recording, shared content, and more-are captured and organized in one place.

How to change your Outlook signature or add a signature. Whether it’s a new job title (congratulations!) or a phone number change, make sure you keep your email message signature up-to-date.

How to use the SUBTOTAL function in Excel to return a subtotal in a list or database.