Use data validation rules to control the type of data or the values that users enter into a cell. One example of validation is a drop-down list (also called a drop-down box or drop-down menu). Watch more in this video.

Learn how to change your Windows sign in from a local account to a Microsoft account to sync your settings across all your devices.

By signing in with a Microsoft account, the new MSN allows you to personalize your experience on MSN.

There are several ways to calculate the difference between two times.

Windows 10、Windows 8.1、および Windows 7 用の Windows Media Player 12 の入手方法について説明します。

Create a bibliography using built-in common citation formats like APA, MLA, or Chicago.

Here are some solutions to common problems with the new Microsoft Edge . If Microsoft Edge keeps crashing. If you can't open Microsoft Edge, or if it opens briefly and then closes, or if you’re unable to open specific webpages, here are some things you can try.

Learn how to use your voice to create and edit documents in Word with the Dictate feature. Find out how to enable, customize, and troubleshoot Dictation.

If your Outlook.com account has been blocked, follow the instructions in this article to unblock it.

Improve your writing skills with Word's tools for spelling, grammar, and clarity. Find out how to check and correct errors in your documents.