topic Unable to Connect Canon R5 Mk II to EOS Utility 3.19 on Mac in Camera Software

Unable to Connect Canon R5 Mk II to EOS Utility 3.19 on Mac

jonathonisola — Thu, 30 Oct 2025 23:38:26 GMT

When I am trying to connect my Canon R5 Mk II to the EOS Utility 3.19 for Mac using Mac OS 15.6.1 I get the following error: Communication with the camera via USB cannot be established.
Start EOS Utility after closing all the apps that communicate with the camera, and then turn on the camera again. I cannot resolve this. Any ideas?

Re: Unable to Connect Canon R5 Mk II to EOS Utility 3.19 on Mac

jrhoffman75 — Thu, 30 Oct 2025 23:46:41 GMT

@jonathonisola wrote:

When I am trying to connect my Canon R5 Mk II to the EOS Utility 3.19 for Mac using Mac OS 15.6.1 I get the following error: Communication with the camera via USB cannot be established.
Start EOS Utility after closing all the apps that communicate with the camera, and then turn on the camera again. I cannot resolve this. Any ideas?

Do you have any apps that would try to download images, like DropBox?

Is Wi-Fi switched off on the camera?

If all you want to do is download images using Apple Image Capture is a better choice.

Re: Unable to Connect Canon R5 Mk II to EOS Utility 3.19 on Mac

jonathonisola — Thu, 30 Oct 2025 23:50:50 GMT

I am trying to add IPTC which you can only do through the utility.

Re: Unable to Connect Canon R5 Mk II to EOS Utility 3.19 on Mac

jrhoffman75 — Thu, 30 Oct 2025 23:55:08 GMT

@jonathonisola wrote:

I am trying to add IPTC which you can only do through the utility.

A number of people have problems with that. I do not (MacBook Air) so can't help.

If you don't get any responses tonight give Canon support a call tomorrow 1-800-OK-CANON.