You can refer to the contents of cells in another workbook by creating an external reference formula. An external reference (also called a link) is a reference to a cell or range on a worksheet in another Excel workbook, or a reference to a defined name in another workbook.

Use your Microsoft account to sign in to Microsoft services like Windows, Microsoft 365, OneDrive, Skype, Outlook, and Xbox Live.

Learn how to unlock your Microsoft account and resolve 'account has been locked' error message.

Learn how to reinstall Windows on your PC and how activation works after it's installed.

Explore OneDrive support, help, and learning resources. Learn how to protect your important files, documents, and memories with OneDrive.

If you already have an account signed in to OneDrive and you want to add or remove another account, you’ll do that in OneDrive Settings.

If you are having trouble with your microphone features, the following information can help you troubleshoot and resolve issues.

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Découvrez comment activer Office préinstallé sur de nouveaux PC Windows 10 ou à l’aide d’une nouvelle clé de produit.

Discover the latest features in Office 2021, including new ways to create content, manage data, and communicate effectively.