100% Money Back Guarantee. 100% Genuine Windows 11 Pro Product Key. One time purchase – Lifetime activated Windows 11 Pro Product Key. Can be activated globally. Free installation support. This is only the Windows 11 Pro Retail Product Key and thus you will have to download and setup Windows 11 Pro yourself from Microsoft’s website which will be provided in the activation instructions. This Product Key can be used to upgrade older versions of Windows given you install the Windows Media Creation tool from Microsoft’s website here.