Windows 10: I found an old Windows Product key and would like to verify its integrity without...

See Summary.I've been trying to get an answer to this question, yet nobody seems to have an answer for me and I'm becoming increasingly frustrated with this.I do NOT want to run the installation media and input the key. I WANT to see if the key is valid under Microsoft's activation servers.I've been building PCs for a good while and I came across three copies of Windows, one for Windows 7 Professional, one for Windows 8.1 Pro and one for Windows 10 Home. They each have a little piece of paper where I wrote the product key down, but I'm unsure whether or not the keys are valid.The packages were

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Product key association disable on old pc

Hey,


I sold my old pc to a friend. He installed some missing parts (HDD, GPU and RAM). Then we installed Windows 10 Home 64-bit version from USB stick. I was surprised to see that windows was automatically activated after that. I did some digging and found out that it is using my product key, which i use now in my own new pc. My friend does not have his own product key, the idea was that he just uses the unactivated windows with limited features.


I uninstalled my Windows 10 product key via command prompt in friends computer (as i understand this is only local solution, if he reinstall windows or clicks the active button, it reactivates automatically with my product key) and now it says windows is not activated, but my product key is still shown with Produkey app in his pc. So far windows is still activated my own pc.


My questions:

1. Is this all i need to do?
2. How do i get rid of product key showing still with product key showing apps on my friend's computer?
3. Is there a way to get rid of association of my product key on that old pc that i sold to friend?

EDIT: I originally installed windows 10 via upgrade option from Windows 7, if that matters.

 

Product key not verified

Hi everyone,

I just finished build my own pc and and everything seemed to work fine. Until starting windows 10.

I ordered Windows 10 Home through Amazon but I did not receive any CD nor USB, just the product key and upon entering it, it says:

'We couldn't verify the product key. Please check your installation media'.

As I tried to browse through the internet for some solutions, my case seems to be unique as I just have the code but no drive from Amazon.

Any suggestions? Thank you in advance.

Guillaume.

 

Verifying Windows product keys

I bought a used OEM version of Windows 7 Ultimate with a product key. How do I verify that product key?