Thank you so much, Bob and Richard for your quick responses. I tried the compatibility mode first because it seemed the easier of the two fixes. It worked! Now I just need to get used to the differences in my new camera. My Rebel XTi was worn out ...
I just bought a Rebel 6T and downloaded the recommended EOS Utility. My Windows version is Windows 10 Home version 1709 build 16299.125. When I click on the desktop icon to start the utility for the first time after plugging in the camera and turnin...