I upgraded to Win 10 from Win 7. Under Win 7 Microsoft Office 2010 Pro was working fine. After I upgraded Windows and launched Excel I was told to enter in my product key, which I did. That was not recognized. So I have been working with MS all day. The product key is good per MS. I have downloaded several different files MS gave me to use and the installation still fails. I get this screen:
FixIt did not work (MS tried that). I deleted every occurrence of Office 2010 from the registry - that did not work. Office 2010 was uninstalled and does not show up under Programs and Features. I have not deleted the Microsoft folder under Programs (86). I'm pretty much out of ideas.