RealityCapture 1.4.1 does not start

[OndrejTrhan (otrhan)]

Do you mean Epic Games Launcher or direct RealityCapture’s installation?

Reality Capture doesn't quit

Can you try go to C:\Program Files\Epic Games\RealityCapture, copy the installation file to some other folder, remove RealityCapture using the Epic Games Launcher, then install RealityCapture using the mentioned installation file and check if this will be still happening for you?