Since Sept. 2023 it's haven't been able yo use old Win 7 / Win 8.1 keys to activate Win 10 / Win 11.
How to Activate my Windows (win8.1 OEM to win 11)
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Shon Pluritec
0
Reputation points
I upgraded old PC with SSD and extra RAM to update from win8.1 pro OEM to win 11 pro. Updated all drivers (BIOS, graphics, chipset...). Now I have issue to activate my win 10. Troubleshooter gives me 0x803FA067. In support gives as a solution ask from community. I understand that Microsoft wants me to buy another win license but its unfair.
Windows for home | Windows 10 | Licensing and activation
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Pauli O 12,865 Reputation points Volunteer Moderator2025-08-21T09:25:38.7733333+00:00