Image thumbnails not displaying in Finder

Worked for me too. Thank you very much!

GeaVox wrote:

MacBook Pro (13-inch, 2017, Two Thunderbolt 3 ports)

2.3 GHz Dual-Core Intel Core i5

8 GB 2133 MHz LPDDR3

Intel Iris Plus Graphics 640 1536 MB

Since installing the latest update OS: 12.2.1 Monterey, my JPEG, JPG and PNG images only show as a generic icon, no Thumbnail previews. Some images are not affected, but I cannot find a common factor - e.g. age of file - to explain why.

I have checked that Finder > View is set oto View as Icons

Finder icon view doesn't show image thumbnail

open View options on Desktop and increased the size of the icon to max and decreased it and then they show up.

Same for Finder, increase size to max and decrease.

if no resolve—

Open Activity Monitor

Search for a process called "com.apple.quicklook.ThumbnailsAgent"

Forced quit that process

Relaunch the Finder (hold the Control Option keys click Finder> Relaunch

GeaVox wrote:

leroydouglas Many thanks for that, it worked, once I worked out how to do what you suggested 😄 At 67 I am still learning stuff!

Have a great day/evening!

Good computing GeaVox !

Thank you. I just had this issue after update to 12.3.1. Quitting the process worked.

I've had to do it several times after updating. Works like a charm. Thanks for the help.