Windows 10: Upgrading Win 8Pro to Win 8.1 was promted to enter Product Key, I did and continue ...

... why am I being asked to buy a new Product Key to activate the new Windows 8.1?CheersAndres

:)

 

Win 10 Pro upgrade using Win 8 Pro product key

I just bought a new computer running Win 10 Home. When I went to upgrade to Win 10 Pro using my Win 8 Pro product key from my old computer, the upgrade wouldn't activate.

Now I'm stuck with a bunch of error messages (mainly 0xC004C003) and am being told windows isn't activated. I can't seem to get my activated Win 10 Home back.

I don't have a product key for the Win 10 Home because it came pre-installed. There's no product code recorded on the packaging or labelling on the device.

So:

How do I either

• activate the Win Pro upgrade, or
• Get my activated Win 10 home back?

 

Product Key not accepted for Win 10 "free" upgrade

I purchased Win 8 pro. It was upgraded automatically to 8.1 through windows updates. Trying to upgrade to Win 10 and it asks for product key. Entered from Win 8 Pro product key card and it says it is not a valid product key.

 

product key 8pro

how can I down load a product key 8pro