I am setting up a new PC with Windows 10 Pro by deactivating an old PCs windows 10 Pro product key. I deactivated the old PC with the 2 commands "slmgr /upk" and "slmgr /cpky". I then proceeded to install windows 10 Pro onto the new PC specifying Windows 10 Pro as the version to install. It asked me for the product key from the old PC which i gave it and it accepted it. The system installed but I found out that Windows didn't activate. When I ran the activation troubleshooting wizard it told me that my product key was a Windows 10 Home key and was invalid for use with the Windows 10 Pro installation.
Does anyone know how this can happen and how to get the Windows 10 Pro installation to accept the old product key as a valid key?