Explaining Windows 10 activation on upgrade with product keys from Windows 8 or Windows 7

blue-wallpaper_windows_10_hd_2880x1800Windows 10 is here. But unlike any other Windows release ever before, the situation with licensing and upgrades is quite different – and rather unclear. Who is entitled to a free copy of Windows 10, can you activate with your existing product key, what happens when you want to perform a clean install, how does Windows 10 activation work, who is covered by the free Windows 10 upgrade license, and more are questions going through everyone’s head.

Ever since Microsoft released Windows 10 last week, we’ve been receiving a flurry of emails pertaining to our free Product Key Tool for Windows, used to recover or retrieve the product key embedded in the BIOS/UEFI that can be used to activate a copy of whatever version of Windows your PC shipped with. And we’ve been replying to these emails on a case-by-case basis as our developers and testers have been putting Windows 10 (and by extension, its activation servers) through the works to try and figure out, all FUD aside, what really is the deal with activating Windows 10. Without further ado, here are our findings.

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