Découvrez comment installer, réinstaller ou activer Microsoft 365 ou Office 2019 sur un PC ou Mac.

Learn how to sign into your PC with Windows Hello using a PIN, facial recognition, or fingerprint.

This article explains how to zip and unzip files.

Master the art of Excel formulas with our comprehensive guide. Learn how to perform calculations, manipulate cell contents, and test conditions with ease.

Learn how to update Windows to ensure your device operates smoothly and securely with the latest features.

Keeping your login information secure will sometimes require you to change a password. You can easily edit the passwords saved in Microsoft Edge.

Learn about installing and adding printers in Windows. In most cases, all you have to do to set up a printer is to connect it to your PC.

How to sign in to Outlook on the web, access your email, contacts, and calendar.

Email messages that you receive can be saved as a file on your computer, or a message that you are composing can be saved as a draft and finished later.

When you initially setup your Windows device, you might have opted to use a local account instead of a Microsoft account. The main difference between a local account and a Microsoft account is that a local account is specific to one device, while a Microsoft account can be used across multiple devices and Microsoft services.