Had Windows 7 oem originally , had the free upgrade to Windows 10. Recently had an update, now asking to be re-activated. Now get error code 0xc004f012. Unable to activate online, or "Change product key" and re-type in product key from oem sticker/license. Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question. Anonymous 2020-03-18T12:19:37+00:00 Staying from W7 pro > W10 pro. 0 comments No comments Staying from W7 pro > W10 pro. Neil D • 34,310 Reputation points • Volunteer Moderator 2020-03-18T12:02:43+00:00 You cannot downgrade from Pro to Home so inputting a Windows 10 Home key will not downgrade Pro to Home. 0 comments No comments You cannot downgrade from Pro to Home so inputting a Windows 10 Home key will not downgrade Pro to Home. Anonymous 2020-03-18T11:59:58+00:00 Too many updates to find the culprit. Will try removing and re-adding the license that way. Else I can fall back to an earlier drive image. 0 comments No comments Too many updates to find the culprit.

Will try removing and re-adding the license that way. Else I can fall back to an earlier drive image. Neil D • 34,310 Reputation points • Volunteer Moderator 2020-03-18T11:52:27+00:00 Was it Windows 7 Pro, I notice you have Windows 10 Pro so your upgrade should have been from Windows 7 Pro. If your OEM disc licence is for Windows 7 Home Premium then you would have had Windows 10 Home. If it should be Windows 10 Home then you need to clean install Windows 10 Home to get back to the edition you have a licence for. What was the update, it should be shown in Settings > Update and security > View update history. (you may be able to uninstall the update) 0 comments No comments Was it Windows 7 Pro, I notice you have Windows 10 Pro so your upgrade should have been from Windows 7 Pro. If your OEM disc licence is for Windows 7 Home Premium then you would have had Windows 10 Home. If it should be Windows 10 Home then you need to clean install Windows 10 Home to get back to the edition you have a licence for. What was the update, it should be shown in Settings > Update and security > View update history. (you may be able to uninstall the update) Anonymous 2020-03-18T11:42:33+00:00 Hi Steve, This is Wil, one of the independent advisor and an expert with Windows 10. I understand your concern with activating Windows 10 using an OEM Windows 7. Since you still have the product key for the old Windows 7 OEM, you may try the troubleshooting steps on the link below for you to be able to uninstall and install the product key using CMD. https://www.maketecheasier.com/uninstall-window... This is actually a Non-Microsoft website but the troubleshooting steps are relevant to your concern. I hope my suggestions help you. If you need further assistance please do reply back and I will respond as quickly as possible. Have a nice day. Thanks, Wilfred P. Independent Advisor 0 comments No comments This is Wil, one of the independent advisor and an expert with Windows 10. I understand your concern with activating Windows 10 using an OEM Windows 7. Since you still have the product key for the old Windows 7 OEM, you may try the troubleshooting steps on the link below for you to be able to uninstall and install the product key using CMD. https://www.maketecheasier.com/uninstall-window... This is actually a Non-Microsoft website but the troubleshooting steps are relevant to your concern. I hope my suggestions help you. If you need further assistance please do reply back and I will respond as quickly as possible. Have a nice day. Independent Advisor