Windows 10 + Windows 11 pro

You will get a Lifetime Genuine OEM key that works on both Windows 10 and 11 Pro
it will be linked to your Microsoft account for activating after the format
and it is unlike other keys that people get for free and sell to you
its Unshared key Private Key
if it doesn't work I will replace it for you
These keys are stockable
I'm giving you 60 Days storage warranty
The activation method is the official method
Go to Settings > Update & Security > Activation
Note: if you have windows Home Edition
you need to upgrade your windows to pro
use this key offline
VK7JG-NPHTM-C97JM-9MPGT-3V66T
then restart your device and try the purchased key