Had a similar question yesterday regarding a Sony Camera.
Questions.....
When you connect your camera do you hear a USB connected device sound?
When you open file explorer, do you see a new drive (one that isn't there without your camera connected)?
If you open Disk Management, do you see an extra drive?
Does your Olympus Camera, require any proprietary software that perhaps didn't survive the upgrade?
Normally, a USB connected device will simply appear as such in file explorer and it is usually just a matter of dragging and dropping the images from your camera to where ever you want to store them on your computer.
When I connect my Nikon D3200 to my computer and switch it on, I get the "Tap or Click to choose" prompt, which I typically ignore and use File Explorer to do what I want.
You might want to try rebooting your computer with your camera attached and turned on.
AND
Check device manager and see if their or any "Other" or problem devices reported.