OEM keys are generally bound to the motherboard, while Retail keys allow transfer to new hardware.
Although Microsoft ended official direct sales of Windows 10, licenses for Windows 11 are interchangeable, allowing activation of Windows 10 using a Windows 11 Pro/Home key. Key Purchasing Options (As of April 2026): buy windows 10 full version
Purchased keys can be used during a clean installation of Windows 10, often providing instant digital delivery via email. OEM keys are generally bound to the motherboard,
Lower-cost keys often stem from OEM or refurbished programs, promising permanent activation. Important Considerations: licenses for Windows 11 are interchangeable