My R5 MkII stopped sending photos to my computer while tether capturing with Lightroom Classic. LrC can still trigger the R5, and I can still manually import photos while it's tethered. The photo count flashes as though it's trying to save the image. It successfully saves the image locally on the SD but fails to send it to the computer. This issue started seemingly out of nowhere. I used the R5, tethered, the day before with no issue. I do a lot of high-volume shooting, so immediate feedback is essential for my workflow.
Troubleshooting so far:
Restarted everything, R5 Firmware updated, checked for computer and LrC updates, tried alt cables (original cables and tethering work on an R6 MkII), disabled all communication settings, reset communication settings.
EOSutility is not installed on my computer.
I know there's a popular idea that the cable is charging the camera, causing it to not send data. I haven't had an issue with this before - I am getting a dummy battery to test this theory.
Hardware - Firmware - Software
Camera: R5 MkII purchased a few months ago; firmware was 1.1.1. when issue presented itself, updated to 1.3.1 as part of troubleshooting.
Tether cables: Canon C-to-C cable that came with the body to a Tether Tools C-to-C extension cable.
Computer: MacBook M3 Pro - macOS Tahoe 26.5.1 - current version as of time of post.
LrC: 15.4.1 - current version as of time of post.
Any help here is appreciated!
