Note that Microsoft no longer accepts Windows 8.1 keys for activating new installations of Windows 11.
Users can purchase a Windows 8.1 license from authorized retailers or online marketplaces. Some product key providers offer affordable Windows 8.1 product keys, but be cautious of unauthorized sellers. windows 81 product key github free
: If your PC originally came with Windows 8 or 8.1, the key is likely stored in the BIOS and can be retrieved using tools like ShowKeyPlus [4, 19]. Note that Microsoft no longer accepts Windows 8