Selling my PC. How do I disassociate my MS account from my Windows serial ?

[Scoobaru]

So I want to sell my old PC as a complete working PC with my legit retail Windows 10 installed on one HDD I no longer need.
It currently has my previous apps and games etc so I need to do a format then re-install windows.
Right now the serial is tied to my MS account and I am not sure how to disassociate it before re-installing.
Almost every guide talks about moving the serial to a new PC which I don't want to do.
My replacement PC has a separate, new legit Win 11 Pro license also tied to the same MS account.

 

[Blackjack Davy]

You should be able to login to your MS account you'll see your devices you should be able to remove them there

 

[sgavan]

https://account.microsoft.com/

Login and you can see your devices in there, just click on it and remove device.