Thumbnail previews are no longer working in Mac

[ateliernab]

yeah, it’s a recurrent thing with mac os.

sometimes it comes, sometimes it goes…

Mac os not showing icons

I checked in on the Apple discussion about the problem, and no mention of a general fix yet. Someone did post the form that you use to ask Apple to fix things. It’s here: Meanwhile, my work Mac is running macOS 15.5, and my own Mac is on something from the future. The future version did originally also not have thumbnails, but it does currently. That might suggest there be some hope that the issue could be fixed in macOS 15. One neat Mac feature is that you can mouse outside of your computer…

this thread is 2y old, and in there is referenced a solution from 2020 and current discussions on the apple forums.