Windows 10: Where can I find my Windows 10 Pro product key, since the auth servers don't recognize this...

I upgraded my old desktop to Windows 10 Pro, and then basically rebuilt the whole thing. Where can I find my Windows 10 Pro product key, since the auth servers don't recognize this PC as being upgraded?


The email that I got when I paid 100 dollars to upgrade the previous iteration of this computer did not feature a product key of any kind. So now, when I hit upgrade, it asks me for a product key, which I obviously do not have. I'm not going to pay 100 dollars twice for Pro.

:)

 

windows 10 Pro product Key

My computer already has windows 10 pro installed and I m now getting a message saying my license will expire and to enter product key which I don t have. How can I solve this.

 

windows 10 product key


What do you mean you HAD to install W10 ?

If you don`t have a key you`ll have to buy one, or use a 7 or 8 key as suggested.

 

windows 10 key

Thanks but I don't want to do any decrypting. I want to download a Win 10 ISO from Microsoft and install it using my Win 8 key. No other steps required. Is that possible?