No camera was detected when shooting from the computer.

[mikela13942993]

Since the last update to Lightroom Classic the camera (Canon 5D Mark III) does not recognize me when shooting from the computer. Instead with Canon EOS Utility it works correctly. 

I have everything updated to the latest versions (LRC, Firmware, iOS).

[Ian Lyons]

Please see linked document as it sets out various troubleshooting steps for tethering https://helpx.adobe.com/lightroom-classic/kb/troubleshoot-tethered-capture-lightroom.html

[mikela13942993]

Impossible.

I have tried everything specified in the link and it still does not work, instead with EOS Utility it works correctly, so the cable and camera are fine.
I have tested with 2 EOS 5D Mark III cameras (Firmware 1.3.6), 2 MacBook Pro 15 "and MacBook Pro 16" laptops, both with macOS Catalina 10.15.5 and the Lightroom Classic 9.3 version and in none of the combinations has it camera recognized.

[Ian Lyons]

What happens if you uninstall EOS Utility?

Removing the Utility will remove the potential for conflict between ther tethering systems

[mikela13942993]

Before, you didn't have EOS Utility installed. I have installed it precisely to see if it recognized me with that program.

I have also tried on an iMac with the latest version of iOS, but the previous version of Lightroom (not the latest) and the same thing happens. I have also tried another simpler cable, not specific to Thetering and the same, EOS Utility recognizes this but LR does not.

A week ago everything was working perfectly for me. Could it be from the cable? That LR needs a special cable and that the one I have for tethering has been damaged? But it seems strange to me that EOS Utility recognizes me with both cables.

[mikela13942993]

I have got it!! Formatting the cards has worked for me !!
Thank you very much for your help.
Regards.