Vista will not show jpeg thumbnails, Help!!

[patos93]

I had the same problem with my thumbnails,they would appear as icons,
I tried everything i could but nothing helped, in the end i discovered
that the problem was caused by my antivirus ,comodo internet security
I disabled defense-plus and i had my thumbnails back it was so simple,
so maybe this will help others to solve their problem, i hope so

[sbaron]

I was having the same problem where jpg files were showing as the standard picture icon and the folders didn't seem to be showing that they contained pictures. i checked all the previously mentioned settings and they were all fine and this is when I actually stumbled upon a solution for this problem. I'm not sure how old this thread is but here is the solution.

go into your misbehaving folder containing pictures showing the standard icon.
on my pc i was only seeing the generic windows jpg icon and noticed that if I used the view size "slider" that when the pictures got to a little smaller than medium the thumbnails came back. I then right clicked in the folder field on an empty space then selected the view>extra large icons in the dialog box. my thumbnails are now fixed.