For some reason, my Windows 10 Home has magically upgraded itself to Pro, only of course I do not have the product key for Pro so it will not activate. (I think this is because I was part of the Insider programme and then left - presumably the system did not revert to Home as it should have.)
How can I "downgrade" to Home so the system will correctly reactivate itself?
I have tried all the methods I can find with Google but none of those work for me.
For example, I cannot do a clean install of Home - which is what most people suggest - because when I run the Media Creation Tool, it automatically tries to install a copy of Pro. I never see an option to choose Home instead.
I have tried changing EditionID to Core and ProductName to Windows 10 Home in the registry, as I have seen suggested, but this does nothing at all. The system still won't activate.
Any ideas please? (edit) For example, could I change the Product Key to the default Home key of YTMG3-N6DKC-DKB77-7M9GH-8HVX7?