During the initial setup process, you will need to link your current Microsoft account to the new computer in order to use it on the new device. All of your devices’ settings and data will be synchronized once the connection is established.
Linking with www.microsoft.com/link lets you stay connected to your friends and family while gaming on a Windows device. You can also access content that is exclusive to your account, keep track of your progress in your preferred games, and share your achievements with other users.