Windows 8 and 8.1 Forums


W8 keeps deleting thumbnail cache (changed folder permission)

  1. #21


    Florida
    Posts : 4
    Windows 8.1 x64


    Well I just gave this one more try. Thumbnails still showed up in disk cleanup after applying the new security settings and rebooting, but even after generating my cache to about 160 mb/s they did not delete on reboot. But now here is where it starts to act funny.

    I would browse folders after the restart, and it was constantly generating the thumbnails but not saving them. It acted like the cache was not present even though I could see the cache in the explorer folder was still there. I ended up removing the permissions and resetting to default, and right away without a restart thumbnails starting working correctly again. However windows IMMEDIATELY deleted the thumbs database files located the Explorer folder.

    Another thing I have noticed is windows does not actually delete these files at all. Creation date does not change - just the modification date. Talk about frustrating.

    I also have Windows 8.1 x64. No WMC though.

      My System SpecsSystem Spec

  2. #22


    Posts : 1
    Win 8.1


    is there anyone that still have this problem?
      My System SpecsSystem Spec

  3. #23


    Tulcea
    Posts : 11
    Windows 8 Enterprise x64

    Yep.


    Yep. And still no fix.
      My System SpecsSystem Spec

  4. #24


    Posts : 14
    Windows 8 64-bit


    Quote Originally Posted by David Bailey View Post
    I found this on Google search:

    Right click on the folder which maintains the Thumbnails cache, here:

    Users\{username}\AppData\Local\Microsoft\Windows\Explorer" (where {username} is replaced by the name of the windows user, for example Neil for me)
    Click Properties
    Click Security
    Click Advanced
    Click change permissions
    Listed are all the users who are allowed to use this folder (I have "System", "Administrator" and my user "Neil". For each user:
    Click Edit
    Under the "Apply to" drop down list, select: this folder and files
    Check the box under deny for: Delete subfolders and files
    Check the box under deny for: Delete
    Click OK

    This stops any users or the system being allowed to delete the thumbnails cache files. Problem solved.

    Note: this does also stop the thumbnails being deleted when using disc cleanup!
    I just applied it & will wait to see if it works.

    Edit- Thumbnail cache disappeard from Disk Cleanup.
    The size of the cache is 62.5 MBs right now.
    I am going to reboot & check it again.
    I'll be back.

    I'm back.
    After restarting, the cache was the same size as before.

    It seems to work.

    Edit- I just noticed similar options are already posted.
    I will add a screenshot of permissions to see if they are as others' settings.

    A picture:

    Attachment 34133



    Has this continued to work for you? I feel like I've tried everything in my Windows 8.1 64 but system and nothing works!
    Please let me know, it'll give me hope!
      My System SpecsSystem Spec

  5. #25


    Harrisonburg, Va.
    Posts : 10,488
    Windows 8.1.1 Pro with Media Center


    yep.
    & my thumbnails work good.
    Hope this helps.

    Thumbnails are absent from Disk Cleanup too.

    Click image for larger version
      My System SpecsSystem Spec

  6. #26


    Posts : 14
    Windows 8 64-bit


    Quote Originally Posted by David Bailey View Post
    yep.
    & my thumbnails work good.
    Hope this helps.

    Thumbnails are absent from Disk Cleanup too.

    Click image for larger version

    Okay, then -- I will try one last time to get this right!
      My System SpecsSystem Spec

  7. #27


    Harrisonburg, Va.
    Posts : 10,488
    Windows 8.1.1 Pro with Media Center


    I never chose to delete thumbnail cache.
    I wanted to keep it so my thumbnails would be quicker to appear.

    Hope you get it sorted out.
      My System SpecsSystem Spec

  8. #28


    Posts : 14
    Windows 8 64-bit


    Okay, I just did everything you said and am about to start enabling thumbnail view on all my video folders, see how many reboots it will be before they disappear. Keeping my fingers crossed!!

    My one question -- you said that Thumbnail cache disappeared from Disk Cleanup. Did you mean that it was no longer at the top of the list? Or it wasn't checked anymore?

    Because I still have Thumbnail Cache in my Disk Cleanup but it shows towards the bottom See attached pic showing both top and bottom view of Disk Cleanup.

    So my question is did Thumbnail Cache disappear COMPLETELY from your Disk Cleanup? Because if yes, then that means I did something wrong
    Attached Thumbnails Attached Thumbnails Untitled.jpg  
      My System SpecsSystem Spec

  9. #29


    Harrisonburg, Va.
    Posts : 10,488
    Windows 8.1.1 Pro with Media Center


    Gone completely from mine.
      My System SpecsSystem Spec

  10. #30


    Posts : 32
    Arch x64 / Windows 8.1 Pro x64


    Might also be worth disabling file creation in "%LOCALAPPDATA%\Microsoft\Windows\Explorer\ThumbCacheToDelete", to prevent it from filling up with useless 0 byte .tmp files.

    The permission "create folders" is combined with "append data", so the creation of "ThumbCacheToDelete" itself can not be disabled or you won't get any new thumbnails for your files.
      My System SpecsSystem Spec

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W8 keeps deleting thumbnail cache (changed folder permission)
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