If MS can't answer in its own forum, you may want to ask for refund and try the free LibreOffice.
I use Ninite.com to get that because....
I purchased Office 2016 as a download for use with a laptop that started out in life as Windows 8 and then upgraded to 8.1 solely to be eligible for Windows 10, which is now loaded.
However, when I tried to install Office, the progress cursor would only get to about 80% and then stop (lots of complaints about this in the MS forum). So, I used the Fix It tool to uninstall Office, rebooted and tried again. Same results.
However, when I looked under programs, the individual programs are present and seem to work. If I look in the control panel where you would uninstall a program, Office has a tag saying "unavailable."
Since I need to test our company's software for Windows 10/Office 2016 compatibility, I have to be 100% positive that the installation really worked.
Any suggestions on how to get this fixed? I can't believe that MS can't build an installer to work with their own OS (not really shocked given their history)
PS these complaints started with the preview edition, so this isn't something they didn't know about. I don't have the DVD to use, just the download installer.