Windows 10: Will using the same prod key one a new PC disable the old one?

I recently set up a virtual machine for Windows 11. While trying to sign in to windows on it with my Microsoft account it asked if I wanted to restore a back-up from what it acted like was my old PC but is my current oneWhich I need to work btw.I start looking through the options it gives me and I find "Set Up As A New PC". Here it says nothing about my old PCs and has no confirmation that it won't disable the old/current one.One reason I'm particularly worried about it disabling my current device is that while setting up the VM I used the same product key that my PC currently runs with. Tha

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Windows 10 Prod key shows different

I have installed windows 10 pro on newly installed pc, I purchased a key while back i used an app called prodkey to find what the prod key is so i could use the same key for new pc. however when i activate with key that i bought Prod key reports it as a different key all together *Confused I guess im little confused on this as well with how it handles License keys like it is activated but not - lot different than Win7. Does windows 10 actually require a key after a fresh install, the step where it asks to put in product key I skipped that step as i would do it later but when i go to System in control panel it says Windows is activated huh? so i selected change product key and put in the key i purchased not sure why the app prod key shows a totally different prod key from C:\windows.

 

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.

 

Unlink an old android phone from my pc

I go thru the suggested steps: Start - Settings - Phone - Unlink this PC.

When I first open the "your phone" screen the old phone is listed. Not sure if the phone listed is suppose to be selectable or not, but my is not. When I select "Unlink this PC" the phone listed is removed. When I select "Add Phone" the old phone still
shows. I have removed the old phone from my Microsoft Account. I have rebooted after unlink this pc but I still cannot remove my old phone.