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EOS Utility 3 "already running"

vk2gwk
Apprentice

Until two weeks ago everything worked fine: Canon EOS R and R5 connecting to my Macbook Pro (Big Sur) as soon as I connected a USB cable between the two.

All of a sudden that is no longer working and when I start EOS Utility 3 it says: "Canon EOS camera connection app is already running". I get this message even after a clean startup with no USB cable attached and Utility 3 not automatically starting... 

I tried wireless - both "infrastructure" and "camera to laptop" and that is not working either.... 

All apps and OS are updated to the latest version. 

5 REPLIES 5

jrhoffman75
Legend

Try turning Wi-Fi off on your camera.

John Hoffman
Conway, NH

1D X Mark III, Many lenses, Pixma PRO-100, MX472, LR Classic

That is standard turned off until I turn it on.

jrhoffman75
Legend

Do you have this app I and running on your phone?

https://www.usa.canon.com/internet/portal/us/home/explore/solutions-services/mobile-apps/camera-conn...

John Hoffman
Conway, NH

1D X Mark III, Many lenses, Pixma PRO-100, MX472, LR Classic

I do have this app on my phone but not running and certainly not when I try to connect the laptop to the camera... 

amar1
Apprentice

I am having this problem as well, keeps saying eos camera connection app is already running. i have uninstalled and reinstalled. It works perfectly on my iMac, but not on my laptop. Would love any suggestions.

 

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