Right now I have Windows 10 Home (Build 14393.1198) installed on my HP laptop. Original OS was Windows 8 Core, upgraded to 8.1 Core, later to Windows 10 Home. Activation is via a digital license linked to my MS Account, which I first created when I did a clean install of 8.1 about a month after doing the upgrade via the Windows Store. Question: Suppose that sometime in the future I want to do a clean install of Windows 10 Home, and create a Local Account during the installation process instead of using my current MS Account. I obtained the current activation key using Belarc Advisor, but do I need anything else for a valid activation? Like some sort of digitally signed certificate? Or is activation of Windows 10 permanently tied to my MS Account?