Sometimes the software works instantly no matter what else is running. Other time even if it's the only software open I still get the error msg:Communication with the camera via USB cannot be established. Start EOS Utility after closing all the apps ...
I'm having the same issue. Sometimes I connect the camera - directly via USB C - to the laptop or desktop Mac and EOS Utility 3 fires right up and other times it's very fussy asking me to close all the apps that communicate with the camera (without t...