EOS R5 The camera was disconnected during downloading in EOS Utility

[Windsun33]

Has anyone ever come up with a real solution for this error from the Windows 10 version of EOS Utility? Happens with my R5 and all the latest camera and computer updates. Tethered, using the Canon R5 supplied USB-C cable on the computers power port.

This is apparently NOT a new problem - did some searching and there are posts about it going back as far as 2010. How many images it will download before the error occurs varies - sometimes just 2 or 3, ocassionally as many as 20 - but it invariably gets the error at some point.

And yes I know I can just take the cards out and plug into PC, but that is just a work around. BTW, same problem with my 6DMk2, so not just the R5.

[Waddizzle]

There are hardware and software prerequisites for the Canon software.  Simply running Windows 10 does not fully meet the requirements.  One commonly overlooked requirement is an Intel chipset.  Another is using a USB port expander.

[Windsun33]

I have all that.

[Waddizzle]

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@Windsun33 wrote:
I have all that.

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What exactly does that mean?  If you are using a USB port expander, then that is probably the issue.

[peteding]

I connected the cable to my camera and a notebook.   Fired up EOS utlity. Select images to download and hit enter.   I was getting the message after downloading 10-20 images.  I clicked on preferences -> basic settings and untick automatically display quick preview window. It seems to work as I downloaded the whole set of 35 images (raw and jpeg),

[markphoto · Accepted solution]

This doesn’t work.  I had 410 images to download and couldn’t get more to transfer in the EOS utility, Windows File Manager or Lightroom Classic. Even after applying this ‘fix’. The solution is to get an external CF Express card reader.  This also saves wear and tear in the camera’s USB port.  Perhaps a future firmware update will fix it, but this seems to be an actual bug in the camera.

[AlekseyVarlamov]

I specially registered to help someone with such a problem. Most likely, this error occurs in those who take photos on a laptop. There is no such error on the PC. all because of the lack of power from the laptop battery, as I understand it, and if you connect the power cable to the laptop and simultaneously upload photos to it, there will be no error and all photos will chip in. So try it

[markphoto]

I was using it plugged in. And the USB port provides the standard 5V power supply. I haven’t tried it with the Thunderbolt 4 port on my new laptop because the card reader is a much better solution. The cards get quite hot during high speed data transfer and I see no reason to subject the (very) expensive dive camera to that.

[markphoto]

That didn’t work for me.  I bought a CF Express external card reader.

[Davidblais]

Turn off auto shut down under Power Saving in settings. It defaults to 1 minute