When buying our Office 2016 software, you buy the Click-to-Run installation. This will not go along with MSI installations of office.
So for example, if you run an MSI installation of Office 2016 Professional Plus installation, and you would like to install our Visio 2016 product, you will first have to delete Office 2016 Professional Plus if it's not Click-to-Run.
To find out whether your installation is MSI or C2R, in the Microsoft Office application, such as Word or Excel, go to File > Account. If you see an Office Updates section, the installation is C2R:
If the Office Updates section is not there, your installation is MSI and will not support to run any Click-To-Run installation office versions.