When I updated to Mac OS Sequoia (15.0.1) recently I had trouble with Canon Utility 3 which would not launch. However I did a couple of things:
- Updated my Canon camera firmware to 1.4 from 1.3 (your camera firmware may have different numbers – get the latest).
- Went to the Canon Europe site to download version 3.18.41.0 of Canon Utility 3. This version is currently not available on the U.S. or Canadian Canon sites as of this writing (November 11, 2024).
Unfortunately Apple moves quickly to newer Mac OS software versions and even discontinues THEIR OWN support for their previous OS versions within a few new iterations. Canon has fallen behind with the Mac versions of their software. Here’s hoping they will step up and improve. Too many photographers are being let down by the current Canon lag behind Apple’s frequent OS updates.
Hope this info helps, my Utility 3 software is now working in Sequoia.