I recently bought a windows 10 home key (retail). I entered the key on the windows 10 installation media and It accepted it. after booting into my new windows 10. It said I was using an inactivated windows. I re-entered the key and It said it was in use by another computer. I check the registry and it showed the same key I used to activate it in the installation media as my current one. Yet it keeps saying I don\’t have it activated. any help would be greatly appreciated
During initial installation, it does not always verify that it is an unused license key.It verifies that is it a properly constructed license key. You can\’t just enter some random bunch of letters and numbers. Later, when it tries to activate itself, then it talks to the activation servers, and reports back that someone else is already using it.