Get steps for how to change screen brightness in Windows.

Learn how to locate and manage your app permissions on Windows devices. Some apps or games need specific permissions to work properly.

This article tells you how to add email accounts to the Mail and Calendar apps so you can start sending and receiving email and creating and managing events.

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。

About digital signatures and certificates in Office, and buying a digital certificate from a certificate authority or create your own.

Find out how to install the latest driver for your printer. If you recently upgraded Windows, your printer driver might need to be reinstalled.

How to use an Excel spreadsheet with mail merge in Word to create mailing lists for labels, envelopes, and documents.

Zipped (compressed) files take up less storage space and can be transferred to other computers more quickly than uncompressed files. In Windows, you work with zipped files and folders in the same way that you work with uncompressed files and folders.

Learn how to update Microsoft Office on PC and troubleshooting tips for installing Office updates.

Get more out of your email with Outlook.com. We've streamlined search to make it easier than ever to find what you're looking for. New features like Files and attachment previews let you see your pictures and files without leaving your inbox.