Change Purchase Sign-in Settings for Microsoft Store & Xbox
Many users are looking to change the purchase sign-in settings is because Microsoft Store on Windows 10 and Xbox asks for your password every time you buy something. The primary goal is to make it an authentic purchase. However, you can choose to disable it, at your own risk, if you are the sole user of the computer or the console.
1] Change Purchase Sign-in Settings for Windows Store
2] Change Purchase Sign-in Settings on Xbox One
If you are the sole use of the console, then choose Passkey not required. So next time when you make a purchase, it will be instant. If you choose to ask for Passkey, you will be asked to setup passkey and then the change will be applied.