Finder preview not displaying thumbnails for JPG, PNG, PDF files

MBP 2021 running OSX 13.3, thumbnails do not appear for the subject files EXCEPT for those files stored in iCloud (not local). I've cleared QL Cache and the other recommendations from similar threads about this problem, rebooted to no avail. I do not have the Google Drive application so that possible issue is a dead end. I do have DropBox and tried one of the solutions recommended for DropBox finder integration, also no help.


suggestions appreciated

Posted on Apr 6, 2023 01:00 PM

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Apr 7, 2023 10:18 AM in response to dialabrain

Checked my MacMini (2020 M1) which is running OSX 13.3 and it has the same issue. Closed all processes that included Finder integration and that did not resolve the issue. I did notice that the QuickLookUIService routine goes non-responsive shortly after I begin looking for thumbnails in Finder (this image is from before I closed all other non-Apple Finder Integration services). I killed QLUIService and then revisited images in Finder but it locked up again very soon after clicking on the first image I found. Did this repeatedly with other images after closing QLUIServes, etc.


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Finder preview not displaying thumbnails for JPG, PNG, PDF files

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