Hello Ralf,
I had I think version 18.2.3 or so and today it updated by itself when starting. It did the installation of 2017 vcRedistributables, then of itself.
But even after rebooting, it silently exits when launched, whether from Config VorpX or Start VorpX. The most I can get is an icon in the taskbar that disappears when the windows cursor approaches it.
Right after update and before reboot, it had the same behavior but also made windows emit the sound of a device that gets disconnected (like when you unplug an usb key) each time I stried to start it.
Previous versions had absolutely no problems running on my Win7 64 with 16GB ram + Oculus rift.
I have already uninstalled keeping the license data and re-installed from web-setup, but no change.
Is there a log somewhere I could post here to help you diagnose the cause ?