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.

Learn how to use antivirus protection in Windows Security to protect your Windows PC against malware, viruses, and other threats.

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

Learn about what effect closing a Microsoft account might have on your other apps and services.

Learn what you can do if you're not receiving account aign-in verification codes.

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 view, manage, and delete cookies in Microsoft Edge.

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

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

Use OneDrive as a cloud backup to share your files and folders with others. Learn how to control permissions, allow editing, or set expiration dates.