Get Microsoft billing support. Find help with Microsoft Store purchases, subscriptions, refunds, payment options, and checking your order history.

Learn how to change the power mode on your Windows PC to preserve your battery, limit notifications, and background activity.

Hotmail est maintenant Outlook.com. Découvrez comment vous connecter pour accéder à votre compte de messagerie Outlook.com, Hotmail, Live ou MSN.

Learn how to extend your PC's battery life using battery saver and other power-saving tips for Windows.

Find out how the Windows location service works and how to change the location privacy settings.

Windows Hello. Windows Hello 可使你通过你的面部、虹膜、指纹或 PIN 登录到你的设备、应用、在线服务和网络。 即使你的 Windows 设备可以使用 Windows Hello 生物识别，也不必这么做。

Learn how to manage extensions in Microsoft Edge, including adding, disabling, or removing them as needed.

Learn how to get Microsoft Store updates for your apps and games. Download the latest versions of Microsoft Store apps and games.

Find out more about Xbox digital codes and gift cards, and how to troubleshoot issues redeeming content.

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