IE isn’t the problem, it’s updated and the graphics card drivers too. There are no OpenGL 3 drivers for this card, OpenGL 2 is my limit on this machine. I have SU2017 on other machines, not to worry.
The problem is that the uninstallation of the inoperative SU2017 sends to the ■■■■ the file explorer integration, among other things. So that, although SU2016 was still installed the thumbnails in the file explorer were not displayed and the context menu were malfunctioning.
But rest assured, I’m IT technician since more than 30 years, we reinstalled SUMAKE2016 from scratch and everything was settled (the previous clean of some registry entries also helped)