Windows 10: All files not showing thumbnails; only showing default file icon Windows 10

Someone else posed the same issue two years ago and received no answer, and I'm having the same problem. This has already happened once before and I just waited it out before, but I have work to do very very soon and this is making it impossible.What's happening is that all my images, videos and pretty much everything else are not showing their thumbnails, only the default file icon. Most other people who have a similar issue have it so that the Photos app icon shows up in place of a thumbnail, but apparently that one's a lot more easily fixable. Here's a photo of what I mean it failed to upl

:)

 

Fix only half of files showing thumbnails & half showing icons

Thanks for your suggestions. I tried these... Clear and Reset Thumbnail Cache in Windows 10 and consider increasing the cache size: Change Icon Cache Size in Windows 11 and 10 but no change. I already has this setting... Uncheck "Display file icon on thumbnails" in explorer view options. No change. Did this... Choose Default Apps in Windows 10 and set default as Viewprint as always but no change - still only half of files showing thumbnails & half showing icons!!! Very frustrating!!! I hate opening a folder & seeing this!! Anymore ideas please??

 

Fix only half of files showing thumbnails & half showing icons

I might suggest: Uncheck "Display file icon on thumbnails" in explorer view options.

Open Folder Options in Windows 10 The issue seems to be file extension jpeg and not jpg so check file associations for both and if different set default program for jpeg to whatever you're using for jpg.

Choose Default Apps in Windows 10

 

File Explorer - Some PDF's show thumbnail image, some don’t

In Windows 10 File Explorer, I see thumbnails for a few of my pdf files but still see the generic Adobe pdf icon for most of them.

• In Windows 10 folder options, the checkbox for “Always show icons, never thumbnails” is unchecked.
• On the Adobe Reader preferences general tab, “Enable PDF thumbnails previews in Windows Explorer” is checked.
• Adobe Acrobat is set as my default PDF viewer.
• I have used Disk Cleanup to delete all my thumbnails to clear and rebuild the cache, yet the problem persists.

Any suggestions on how I can see all the pdf icons as thumbnails?
Windows 10 Pro, Version 1903, Build 18362.657
Adobe Acrobat Reader DC (20.006.20034)

I asked over in the Adobe Acrobat Reader forum a few days ago but have received no replies.





Ron