How to Sign in to Microsoft Store with Different Account in Windows 10
Like Android has Google Play, and there's the App Store in iOS, the Microsoft Store app (formerly Windows Store) adds the ability to deliver digital content to the end user in Windows. If you sign in to Windows 10 with a Microsoft account, the OS will use it for the Store app by default. If you like, you can sign in to Microsoft Store with a different account and still use your current Microsoft account to sign in to Windows 10.