Recently, DOpus stopped showing some of my photo jpg images in the preview pane with an error message "It appears we don't support this file format" but did continue to show other photo jpg images!
See screen shots.
I'm at a loss to explain this behaviour and wondered if there were any problems with DOpus?
In File Explorer the view is exactly the same as in DOpus, new jpg files are visible but older ones are not. Going back through my photo collection no images before 2021 are viewable!
The attached file shows a picture from my photo collection that is not viewable and the same image from a backup which is visible.
It looks like something happened at the end of 2020 that made images on my PC unviewable.
Every byte in the file that doesn't work has been set to zero. Either there was a hardware failure or something erased the data. Nothing will view those files.
No ransomware attack or anything else strange has happened so I'm at a loss to explain how my files got wiped. I'll restore from my backups and hope I've not lost too many images.