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#71
There are no product keys. There are no product keys. There are no product keys. (Did I mention that there are no product keys?) When you install Windows 10 for the first time your computer is activated by digital entitlement. You can then clean install or upgrade as often and for as many times as you like and no product key is ever needed. When doing a clean install just SKIP the product key screen (that is only for changing editions and retail copies) and Windows 10 will activate when the computer connects to the internet. The first installation (the entitlement upgrade) establishes the digital entitlement. That is permanent for the life of the computer (motherboard).