Explore the new and refreshed apps of Windows 11, from Photos to Microsoft Store. Watch the video and read tips to find tools to stay creative and productive, whether on your phone or on your PC.

We'll describe three connection types for keyboards and mice. Follow the description that applies to your mouse or keyboard’s connection type.

You weren't able to find your username. If the username lookup wasn't successful, try looking for your Microsoft account username within other products or services that you know are associated with that account.

Discusses the release of the Malicious Software Removal Tool (MSRT) to help remove specific prevalent malicious software from Windows-based computers.

Training: Watch and learn how to use Word in Windows. Explore Microsoft Word training guides, articles, and how-to videos.

Use the People page in Outlook.com to view, create, and edit contacts and contact lists. Create new contacts from scratch, or add someone as a contact from an email message.

Learn how to type a letter online using Word for the web. Choose a letter template for online letter writing. Edit, send or print your letter online.

Learn how to concatenate text strings in Excel using the CONCATENATE function. Our step-by-step guide makes it easy to join two or more text strings into one.

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。

Create Outlook Data Files (.pst) on your computer to save Outlook items by account, project, or to archive older items.