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Large and Extra Large Thumbnails

by JLo59 / August 29, 2017 10:15 AM PDT

I have a problem with Large and Extra Large thumbnails of photos not showing. Medium thumbnails show fine. But when I switch to Large or Extra Large, they flash as thumbnails, then revert to the mountain scene.

I've done the two solutions mentioned elsewhere - I've unchecked the box in Control panel, Folder Options "Always show icons, never thumbnails" and I've deleted my Thumbnail cache several times using Disk Cleanup. But the problem remains.

I actually think the problem started when I ran Windows Cleanup, but I'm not sure.

What else can I do?

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All Answers

Best Answer chosen by JLo59

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Here's a thing. What are jpg's associated with?
by R. Proffitt Forum moderator / August 29, 2017 2:18 PM PDT
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That worked!
by JLo59 / August 29, 2017 2:55 PM PDT

many thanks, that worked!!

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Thanks for sticking with it.
by R. Proffitt Forum moderator / August 29, 2017 3:00 PM PDT
In reply to: That worked!

We have to start with most common and work our way to less common.

What I hope you carry away here is how associations play a role here.

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Did you try Ctrl + Mouse scroll wheel?
by R. Proffitt Forum moderator / August 29, 2017 11:00 AM PDT
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Large and Extra large Thumbnails
by JLo59 / August 29, 2017 12:17 PM PDT

I hadn't tried scrolling + mouse wheel, but I just did and it's the same behavior as before: they start out as the mountain icon, and stay that way until they get about 75% smaller, when the actual thumbnail image appears. The thumbnails that appear are the same size as when I select "Medium" icons on the dropdown.

What I still find strange is that the actual image thumbnails flash for a second before the window refreshes and are replaced with the mountain scene icon.

Thanks for the idea, though - any others out there?

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I've Seen This On NAS Drives Before
by Grif Thomas Forum moderator / August 29, 2017 12:51 PM PDT

If you're seeing the problem when viewing the pictures on Network Attached Storage drives, (a drive on the network that isn't local), then the normal fix is to delete the "thumbs.db" file which resides on the NAS drive. You may need to perform the deletion by making the file visible ( in Folder Options "Show hidden files and folders" and Unhide" Protected Operating System files), take "Ownership" of the files, or temporarily shut down Windows Explorer.

Hope this helps.


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Still have problem
by JLo59 / August 29, 2017 1:27 PM PDT

The photos are actually in my Pictures library on my c: drive.

I've deleted every thumbs.db file I could find in my Pictures folder (I use Everything, so I can see them) and restarted - but still have the same problem. Is there another database somewhere else?

Interestingly, it's only jpg's that show this behavior - pdf thumbnail previews are an actual image.

My screen resolution is 1920 x 1080 - and hasn't changed in years. This thumbnail issue only started 2 weeks ago....

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Is this PC one of those High DPI displays?
by R. Proffitt Forum moderator / August 29, 2017 1:22 PM PDT

There is an enduring bug with W7 and High DPI displays. I have yet to read of a fix.

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