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Learn how to share Microsoft 365 Family subscription benefits with up to five people. Manage invitations, devices, and people you've shared Office with.

Learn how to create and add a signature to email messages you send in Outlook.com.

How to uninstall Office automatically. After you restart your computer, the uninstall tool automatically re-opens to complete the final step of the uninstall process.

Learn about the recovery options in Windows. Find out how to reset your PC, go back to a previous version of Windows, or use media to reinstall Windows.

Office Insiders に参加して、Windows 用の新しい Outlook の使用を開始します。 最新バージョンの Outlook を最初に確認し、改善に役立つフィードバックを送信できます。

Hotmail is now Outlook.com. Learn how to sign in to access your Outlook.com, Hotmail, Live, or MSN email account.

Make the everyday easier with Windows 11. When there's a lot to do, Windows 11 helps you get it done. With intuitive navigation and new multitasking tools, it brings you the performance you want and the security you need.

Learn more about how to fix problems with the Windows Start menu, and what to do if the Start menu won't open.

An array formula (one that spans multiple cells) can do calculations on rows and columns of cells where you might otherwise need to use several formulas. For example, you can count the number of characters that are contained in a range of cells, sum only numbers that meet certain conditions (such as the lowest values in a range or numbers that fall between an upper and lower boundary), and sum ...