Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
I don't know why this dude keeps sweatin' me about this. I have also had to, basically, reinstall Windows to get some MICROSOFT apps to install. As far as the "compatibility issue goes, I have installed MICROSOFT software/apps, on some systems, using the compatibility mode install. Now, he may not have, and I respect that. But I, like you just did, have had to do reinstalls when Office 2007, 2010, 2013, and 2016 into Windows XP, Vista, Vista Ultimate, 7, 7 Ultimate, 8, 8.1, and 10. I'm happy for those who have not had issues. But I have had an array of error messages, trying to install this stuff.
So, Heinz, God bless, and continue your success. But for some reason, you still failed to give a solution. I do, however, appreciate your extensive knowledge of "Compatibility mode". Thank you!