Windows 10: Win 11 24H2: Video thumbnails not showing up in Windows Explorer

I suddenly noticed I show no thumbnails for video files I used to show. They just show icons based on the default program that opens them Movies & TV. If I change the default program it changes nothing. Every solution see either does not fix the issue or those settings are already made. Restoring default in Folder Options and all other settings solutions are not the issue This just happened recently.

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Windows Explorer crashes and thumbnails problem

Hi, I hope you can help me.
Windows Explorer is no longer showing thumbnails on files played by Windows Media Player. I've run cmd and regsvr32 shmedia.dll and regsvr32 shimgvw.dll. That seemed to solve the problem...but it created a different one. Now when I try to open a folder on an external hard drive it crashes. I read in an old 2008 post it was an avi file causing the problem and suggested the run cmd regsvr32 /u shmedia.dll. That solved the opening problem but recreated the thumbnail problem. Any help to achieve both functions would be greatly appreciated. Thank you.

 

can i show Photos BUT NOT videos on windows 11 file explore thumbnail

Since updated from Windows 10 to 11, if i have 1 JPG and 1 MP4 file in each folder, and when i preview my file folders on File Explorer, it shows a thumbnail of the video but not photo. Can I change in the other way around (ie. show thumbnail of photo, BUT NOT videos) on the thumbnail?

 

Video thumbnails not showing up in Windows Explorer.

So I've been having this problem for several months now..

One day some of my video thumbnails weren't showing, so I deleted the thumbnail cache, and then they were all gone and never returned. It was like Windows lost the ability to create thumbnails for videos, and as I moved videos around over time windows never generated new thumbnails for them.

I have photo thumbnails, but not video thumbnails, and video thumbnails don't show up in other programs either, such as Media Player, or in alternatives to Windows Explorer, such as One Commander. It's like Windows has lost the ability to create video thumbnails. And only video thumbnails.

I also don't get any video previews in Windows Explorer's Preview Pane; but again I do get previews for photos and other files, PDF, etc.

And it's the same on all 4 of my hard drives, so it's not drive specific.

I have tried a lot of stuff such as:

• Deleting the thumbnail cache.
  
• SFC.
  
• DISM.
  
• Edit Group Policy.
  
• Explorer>Options>View>Always display icons, never thumbnails (checked and unchecked)
  
• Resetting Media Player settings (in case that interfered with it).
  
• Rebuilt the search index.
  
• Searched REGEDIT for "thumbs", but nothing stood out.
  
• Deleted temporary files.
  
• Virus and malware scans.
  

And I've probably tried various other stuff too that I've forgotten about.

Is there anything else I can check?

How exactly does Windows build thumbnails, is there some code, or a .dll file somewhere? Or is there some codec or media player feature that grabs a snapshot of the file or something?

Does Windows handle video and photo thumbnails differently?

I also don't have any thumbs.db files, anywhere (is this even still a thing?), even in folders with photos and thumbnails in them, even though I have turned on the option to show protected operating system files and hidden files.

Anybody know what's going on here?