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I am trying to run the upgrade from my Windows 8.1 Pro computer to Windows 10. It keeps telling me:
Setup has failed to validate the product key
This has happened when clicking "Upgrade" inside the Windows 10 Media Creation Tool and has also happened when running the installer from a flash drive. However, that flash drive did successfully install Windows 10 on another computer.
How can I fix this?
This computer is a Lenovo ThinkPad T530 which originally shipped with Windows 8 (basic), was upgraded to Windows 8 Pro, and then to Windows 8.1 Pro. When I run NirSoft's product key retrieval tool, it shows the original Windows 8 key stored by Lenovo in the BIOS as well as the Windows 8 Pro Upgrade key. Could it be that the upgrader has "decided" that these keys are not eligible for upgrade?
@ElTurner That's what I thought too. When I said that line about "not eligible", the key was that the upgrade checker doesn't know what to do with OEM key + upgrade key together - i.e. that it's just a case the current version of the tool can't handle. – Moshe Katz – 2015-07-29T20:19:31.690
1Have you double-checked you're upgrading to a compatible version? In other words, since you have Windows 8.1 Pro, you should be upgrading to Windows 10 Pro and should have chosen that version in the tool. – Reg Edit – 2015-07-29T20:34:38.180
@RegEdit Yes, I am attempting to go from Windows 8.1 Pro to Windows 10 Pro. – Moshe Katz – 2015-07-29T20:51:41.520