Here at the company we have the office 365 proplus installed on all machines. On a specific user machine I had to install Project Professional 2016. I did everything right, I downloaded the ISO from the Office site, and went to try to install it.
But it gives a problem of incompatibility, since Office 365 is installed Click-To-Run, and the Project that I was trying to install is of a different format (I downloaded full offline - Windows Installer).
I uninstalled office 365, and installed the project. I was trying to do the installation of Office 365, gave the same problem of incompatibility due to Click-to-run with Windows Installer.
I researched about downloading Office 365 offline, on the Office website there is a page teaching how to do this. However when downloading the files, you have to execute a command and when this command is executed, it gives the same error of the incompatibility due to the Click-To-Run - Windows Installer.