There is no official key for Windows 7 on Windows 10.
There is no official key for Windows 7 on Windows 10.
She’s explaining the situation clearly. I’m using Windows 10 on a USB drive now, coming from Windows 7. I need to reinstall Windows 10 but have a Windows 7 activation key. Can I use that key to activate Windows 10? I’ll make sure to remove it from Windows 7 before doing anything so it doesn’t get linked to both systems.
I understand this can be frustrating. You should review the discussion and the linked article for additional details.