Press Windows + R , type winver , and press Enter. Ensure you are running at least Windows 10 version 1909 (build 18363). Older builds may not support CR3.
You might have experienced the frustration of connecting your camera to your PC, opening a folder, and seeing generic icons instead of your thumbnails, or trying to open a file only to be met with an error message. This is the "CR3 Wall." canon cr3 codec windows 10