Your original W7 key will be for the short term problems as this can be validated by thier helpdesks.
Roy
Not for Windows 10 it won't. Or at least Microsoft has told people they won't. Microsoft has told people to re-install the previous OS and upgrade again.
But, if that is what people want to keep trying, all they are going to lose is time and gain frustration.
List of Generic Product Keys to Install Windows 10 Editions
Generic keys (aka: "default keys") for Windows 10 from Microsoft will allow you to install or upgrade to a specific Windows 10 edition you want, but will not activate it.
Using a...
I am installing an SSD for a friend on a working PC with an old patter drive that is super slow.
I used a product key finder and got VK7JG-NPHTM-C97JM- 9MPGT-3V66T
product key finder says this is OEM and I need a digital license for activation. ...
Dear Forum,
How long are generic product keys good for? How long do you have to activate the upgraded edition before the generic product key expires?
re: ...
Win 10 Home ..........................TX9XD-98N7V-6WMQ6-BX7FG-H8Q99
Win 10 Pro .............................VK7JG-NPHTM-C97JM-9MPGT-3V66T
Those are the known generic product keys.
I have a pre-install Win 7 Home Premium > upgraded to Win 10...
I'm curious, I might have to try this on an extra partition...
My computer is fully activated on Pro version. I've also done a clean install after the upgrade and activated immediately just fine.
So, let's say I bungled and clean installed...