The Windows Store offers various apps that users can browse through, purchase, or get for free to download and install to their Microsoft account in Windows 10 PCs and devices.
To be able to install apps from the Store, you must be signed in to the Store with a Microsoft account. When signed in to the Store with a Microsoft account, you will be able to install any apps already owned by that Microsoft.
You can remove a device if you’re trying to install an app or a game from the Store on a Windows 10 device and you’ve reached your device limit. You can install apps or games on up to 10 devices.
This tutorial will show you how to remove Windows 10 devices from being associated with your Store account for getting apps and games.