Clear and Reset Thumbnail Cache in Windows 10  

Page 5 of 6 FirstFirst ... 3456 LastLast
  1. Brink's Avatar
    Posts : 48,963
    64-bit Windows 10 Pro for Workstations build 19640
    Thread Starter
       #40

    dmholck said:
    I can't see it, but I'm no expert. Your original corrupted database/cache makes the most sense to me... everything about it seems to explain all the symptoms. Even the "windowscentral.com" forum makes the same observations about the thumbnail database.
    Can you think of any explanation as to why none of the thumbnail database clearing methods seem to do anything? Every time you open a folder in the files explorer it "regenerates" the thumbnails of course (in the case of my mp4 files, briefly showing the icon for my default player "MPC-HC X64", but I see no evidence that the database/cache was ever cleared.
    What about the mp4 file itself would cause one file to display the picture from another mp4 file, or multiple files to display the picture from 1 other mp4 file?
    If there's an issue with the mp4 files themselves, then it wouldn't matter about the thumbnail cache.

    It could be a number of things that happened to the mp4 files that may have caused this. Here's a couple of ideas:

    1) Converted mp4 file from some other format.

    2) The way the mp4 file was packaged for the image it shows.
      My Computers


  2. Posts : 8
    Windows 10
       #41

    not converted


    None of the MP4 files were converted. All displayed the correct thumbnail picture on the old computer.

    I thought I had it! I searched C: for "thumbcache" and a bunch of files came up. I clicked on the biggest one; it wanted to know how to open it; I chose my MP4 player "MPC-HC"; then all of my MP4 thumbnails flashed by one after the other! I found the database!! I deleted it; a search again showed as "to be deleted"; figured I needed to restart, as in the other methods; restarted; no change. I did it again with a "force deleter" and restarted; no change. Of course, not being an expert, I have no idea if this method is a real way to delete the database.
      My Computer

  3. Callender's Avatar
    Posts : 2,548
    Windows 10 Home 1903 64-bit
       #42

    dmholck said:
    I can't see it, but I'm no expert. Your original corrupted database/cache makes the most sense to me... everything about it seems to explain all the symptoms. Even the "windowscentral.com" forum makes the same observations about the thumbnail database.
    Can you think of any explanation as to why none of the thumbnail database clearing methods seem to do anything? Every time you open a folder in the files explorer it "regenerates" the thumbnails of course (in the case of my mp4 files, briefly showing the icon for my default player "MPC-HC X64", but I see no evidence that the database/cache was ever cleared.
    What about the mp4 file itself would cause one file to display the picture from another mp4 file, or multiple files to display the picture from 1 other mp4 file?
    Here's an alternative method that I sometimes use: https://www.softpedia.com/get/System...-Cleaner.shtml
    With that one I launch the app then kill explorer.exe via Process Hacker.
    Then I let the app scan for and clean thumbnail databases. Then I reboot using the Process Hacker menu.
    Hacker> Computer> Restart

    You could also try removing all installed media players (for video) including leftovers.
    Reboot and reinstall the one you use.

    If problem persists re-encode the problematic .mp4 files:

    Here's one of the utilities I use to do that:

    https://shana.pe.kr/shanaencoder_summary (use .mp4 preset)

    Try Media Preview to generate thumbnails but not if you have another third party shell extension installed that does the same thing.

    Get thumbnails for all possible image and video formats in Explorer folders
    Last edited by Callender; 3 Weeks Ago at 19:52. Reason: correction
      My Computer

  4. djbillyd's Avatar
    Posts : 215
    Windows 10 19536.rs_prrelease 191211-1446
       #43

    With all of this going on, my little issue was totally scrapped. No problem though, it's interesting, and I've learned a lot. A lot about images, and videos, but my PDF thumbnails are still out in space. I was having issues with my Office files too, but today, I noticed a new feature with Office. When you save a document, there is a box at the bottom of the dialogue box that asks if you want to save a thumbnail!Clear and Reset Thumbnail Cache in Windows 10-save-thumbnail.jpg

    So, what is wrong with PDF, particularly, Adobe Reader DC saved files?

    - - - Updated - - -

    djbillyd said:
    With all of this going on, my little issue was totally scrapped. No problem though, it's interesting, and I've learned a lot. A lot about images, and videos, but my PDF thumbnails are still out in space. I was having issues with my Office files too, but today, I noticed a new feature with Office. When you save a document, there is a box at the bottom of the dialogue box that asks if you want to save a thumbnail!Clear and Reset Thumbnail Cache in Windows 10-save-thumbnail.jpg

    So, what is wrong with PDF, particularly, Adobe Reader DC saved files?
    And, as one might expect, the thumbnail is no longer saving for WORD documents at this time. "More at 11"!

    Geez....
      My Computer


  5. Posts : 8
    Windows 10
       #44

    Thumbnail issue fixed


    Among the various suggestions was a thing from Callender that mentioned a freeware program called Icaros. I installed that and it now generates (very quickly) great (and correct) thumbnails for all my MP4 files. The reboot after installing it took a long time ...maybe because it is redoing all the thumbnails before restarting?

    I note that pdf files do not generate a picture like an mp4, but just a rectangular thumbnail that says "PDF" on it. The following should help in generating the pdf thumbnails;
    Enable thumbnail preview of PDFs in Windows Explorer
    So far, it is not working for me with Icaros, but maybe have to do a reboot.

    djbillyd; so sorry! I did not understand how a forum worked; for some reason I thought I was talking to just the one guy, and then finally realized I had jumped into the middle of another conversation and was boring all kinds of people. I hope something from the above is useful to you.
      My Computer

  6. Callender's Avatar
    Posts : 2,548
    Windows 10 Home 1903 64-bit
       #45

    @dmholck

    You might start a new thread for your PDF Thumbnail issue. The software you installed should only affect thumbnails for video files.
      My Computer

  7. djbillyd's Avatar
    Posts : 215
    Windows 10 19536.rs_prrelease 191211-1446
       #46

    dmholck said:
    Among the various suggestions was a thing from Callender that mentioned a freeware program called Icaros. I installed that and it now generates (very quickly) great (and correct) thumbnails for all my MP4 files. The reboot after installing it took a long time ...maybe because it is redoing all the thumbnails before restarting?

    I note that pdf files do not generate a picture like an mp4, but just a rectangular thumbnail that says "PDF" on it. The following should help in generating the pdf thumbnails;
    Enable thumbnail preview of PDFs in Windows Explorer
    So far, it is not working for me with Icaros, but maybe have to do a reboot.

    djbillyd; so sorry! I did not understand how a forum worked; for some reason I thought I was talking to just the one guy, and then finally realized I had jumped into the middle of another conversation and was boring all kinds of people. I hope something from the above is useful to you.
    Hey, we are all in this together. You got a problem, we got a problem. Windows 10 does not discriminate. It screws us all. And I did try some of the things you referenced and found no joy. Having the Insider Preview s part of what I'm dealing with. But talking about releasing this thing like it's OK is gonna make a lot of people mad. I hope my whining helps some to, at least, be on the look out!

    - - - Updated - - -

    Callender said:
    @dmholck

    You might start a new thread for your PDF Thumbnail issue. The software you installed should only affect thumbnails for video files.
    This one of the threads you get when you search the community. I think, looking back, that PDF thumbnails were discussed earlier. I know they were by me..., in this thread.
      My Computer


  8. Callender's Avatar
    Posts : 2,548
    Windows 10 Home 1903 64-bit
       #47

    Would suggest: Uninstall your PDF reader/ viewer/ editor program(s) using this:

    Geek Uninstaller - the best FREE uninstaller

    Then reboot and install a fresh copy.
      My Computer

  9. djbillyd's Avatar
    Posts : 215
    Windows 10 19536.rs_prrelease 191211-1446
       #48

    Callender said:
    Would suggest: Uninstall your PDF reader/ viewer/ editor program(s) using this:

    Geek Uninstaller - the best FREE uninstaller

    Then reboot and install a fresh copy.
    I use Revo Uninstaller. What makes "Geek" better? Revo scrapes the registry too.
      My Computer

  10. Callender's Avatar
    Posts : 2,548
    Windows 10 Home 1903 64-bit
       #49

    djbillyd said:
    I use Revo Uninstaller. What makes "Geek" better? Revo scrapes the registry too.
    Use Revo then. I find Revo's rules problematic. Geek does reg scan. I also have an app that runs as a service and monitors uninstalls and detects leftovers including registry.

    Maybe I should have phrased the original comment better:

    Use a decent uninstaller program - not the one built into windows and make sure that you shut down any of the PDF program's running processes or services first.
    Last edited by Callender; 3 Weeks Ago at 14:23. Reason: typo
      My Computer


 

Tutorial Categories

Clear and Reset Thumbnail Cache in Windows 10 Tutorial Index Network & Sharing Instalation and Upgrade Browsers and Email General Tips Gaming Customization Apps and Features Virtualization BSOD System Security User Accounts Hardware and Drivers Updates and Activation Backup and Restore Performance and Maintenance Mixed Reality Phone


Related Threads
Our Sites
Site Links
About Us
Windows 10 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 10" and related materials are trademarks of Microsoft Corp.

© Designer Media Ltd
All times are GMT -5. The time now is 21:49.
Find Us




Windows 10 Forums