EOS Utility to connect a camera would not start up for 5D Mark IV, Mark III, EOS 7D

[kerrydigital]

I connect my canon cameras to my computer to capture images and download them immediately for events. Recently as I was connected to the computer the power for my whole set up was cut off. When I reestablished power and tried to restart EOS Utility the utilily program would not start up except for the starting title slide. Then nothing. I have uninstalled the program, I have installed both version 2 and version 3 with my Canon 5d mark iv- mark iii - 7D and even with my old 50D. I even upgraded from Windows 10 to Windows 11. Microsoft says its not their fault. Does anyone have any suggestions?

[jrhoffman75 · Accepted solution]

When strange things happen on my W10 PC I run the free version of CCleaner and do a registry clean. 

[kerrydigital]

Thanks. That helped. I can now run EOS Utility 3 but not version 2. But now I am back in business. Thanks again. 

[FloridaDrafter]

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@kerrydigital wrote:

"Thanks. That helped. I can now run EOS Utility 3 but not version 2. But now I am back in business. Thanks again." 

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You are very welcome. I wish I could help with EOSU 2, but it's been quite a while since I've needed it. It is installed on my Windows 10 Pro laptop and I think the last EOSU install came from the 5D mark IV support page some 3 years ago when my system was new. Since then I've been updating EOSU using the file downloaded from the R5 support page. I'm not sure if it's (ver. 2) still included with the d/l for MILC's. I wouldn't overlook that ver. 2 may not be compatible with Win 11, but TBH, I don't see why not.

Newton