Raw Image Extension (Microsoft)

[Leo]

It's reported to work here, after a recent update. You could try asking @ForzaAndy in that thread:

Need to view Canon CR3 image files

Great news: I just checked and was able to download an update to the Raw Image Extension by Microsoft (from the Windows Store). With the update which I believe just became available, I am now able to see the CR3 preview image in Explorer/Director Opu…