Find your product key to activate Windows. A product key is a 25-character code that's used to activate Windows and helps verify that Windows hasn't been used on more PCs than the Microsoft Software License Terms allow.

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

Learn how to manage background activity for apps to help save battery power in Windows.

Obtenga información sobre cómo activar Windows con una clave de producto o una licencia digital, comprobar el estado de activación y vincular su cuenta de Microsoft.

Get answers to common questions about Windows 11 and Windows 10 in S mode.

Learn how to turn on device encryption, or standard BitLocker encryption in Windows.

Microsoft's products and services work best if you use the same language and region across all your devices, and in all of your app and Store settings.

We’re continually releasing updates to our application, based on customer feedback. Check out What's New in the latest updates for Skype on desktop and mobile.

How to access and change the privacy settings in Windows 10 and 11.

Find out how to use Game Bar to capture game play, chat with friends, track achievements, and more.