EOS

[cyraxchb · Accepted solution]

I had the same problem, and finally found a solution. There is a free raw codec from Microsoft available now which works fine for my 6D MkII. It previews .cr2 files in Windows Explorer. You can find it here:

https://www.microsoft.com/en-us/p/raw-image-extension/9nctdw2w1bh8?activetab=pivotverviewtab

I found this helpful information here:

https://photo.stackexchange.com/questions/91840/how-to-view-cr2-on-windows-10-from-6d-mark-ii

[malicealice]

Thanks, that worked! Only took Microsoft forever to come up with an update. Wow. I basically gave up and started shooting Raw + Jpeg, now I won't have to! 

[greywolf45]

The 5D4 is singled out also. I bought mine last week (March 2020) and .CR2 files from that camera will not open. The .CR2 files from my 7D2 will. But that camera is 2 years old.