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Windows 7: Thumbnail Cache - Clear and Reset

Thumbnail Cache - Clear and Reset

How to Clear and Reset the Thumbnail Cache in Windows
Published by Brink
22 May 2009
Published by

How to Clear and Reset the Thumbnail Cache in Windows

information   Information
By default, Windows stores the images for thumbnail previews in cache memory so that it can redisplay the images quickly each time you reopen a folder in Windows Explorer (Vista and Windows 7) or File Explorer (Windows 8).

This tutorial will show you how you to clear and reset the thumbnail cache to force Windows to reload the thumbnail picture views into the cache again as needed as you open folders.

Note   Note
The thumbnail cache .db files are located in the hidden system folder location below:

C:\Users\User-Name\AppData\Local\Microsoft\Windows\Explorer

You may want to clear the thumbnail cache if the Windows Explorer thumbnail pictures have become corrupted and not displaying properly, or the thumbnail cache file has become to large and you want to clear some hard disk space.





Here's How:
1. Open Disk Cleanup.

2. Check the Thumbnails box, and click/tap on OK. (see screenshot below)
Name:  Clear1.jpg
Views: 44941
Size:  72.9 KB
3. Click/tap on the Delete Files button. (See screenshot below)
Name:  Clear2.jpg
Views: 43854
Size:  17.7 KB
4. Disk Cleanup will now clear the thumbnail cache and close.
That's it,
Shawn




22 May 2009   #1
Captain Zero

Windows 7 Home Premium x64
 
 

Yet another awesome tutorial. Kudos Brink!


My System SpecsSystem Spec
22 May 2009   #2
Brink
Microsoft MVP

64-bit Windows 8.1 Enterprise
 
 

You're welcome Captain Zero. Thank you.
My System SpecsSystem Spec
13 Jan 2010   #3
Jeff P

Win 7 Home Premium
 
 

Shawn:

That is nice and simple ... it just doesn't seem to work. I watch the folder where the cache files are stored, they get deleted alright but then they almost immediately reappear (within 5-10 seconds). When I reopen the folder where I was trying to refresh the thumbnails, the old thumbnails (which do not match the actual files that were edited) are still there.

I assume there is some setting that needs to change so that the old thumbnail files do not just get immediately restored and the OS is forced to create new ones as folders get opened. Do you know what change is needed?

Thanks.

Jeff
My System SpecsSystem Spec
.


13 Jan 2010   #4
Brink
Microsoft MVP

64-bit Windows 8.1 Enterprise
 
 

Hello Jeff, and welcome to Seven Forums.

You might see if using the free program CCleaner to delete the thumbnail cache in Windows 7 may work better for you instead.

Thumbnail Cache - Clear and Reset-ccleaner.jpg

Hope this helps,
Shawn


My System SpecsSystem Spec
13 Jan 2010   #5
Jeff P

Win 7 Home Premium
 
 

Shawn:

Thanks for the reply. I downloaded CCleaner and used it just to try to fix the Thumbnail Cache. I don't see any changes to the thumbnails in the folders. They still do not match the picture in the file. Do you have any ideas why these thumbnails will not refresh? Thanks!

Jeff
My System SpecsSystem Spec
14 Jan 2010   #6
Brink
Microsoft MVP

64-bit Windows 8.1 Enterprise
 
 

Jeff,

You might also see if rebuilding the icon cache may help, but try running a sfc /scannow command to.
My System SpecsSystem Spec
14 Jan 2010   #7
Jeff P

Win 7 Home Premium
 
 
Thumbnails still messed up

Shawn:

The rebuild of the icon cache followed by a flushing of the thumbnail files using disk clean didn't make a difference. The thumbnails remain as they were.

When I ran the sfc /scannow command I did get some errors that could not be repaired. The log file is attached (if you have time and the inclination to scan it). the errors appear to be related to printing so I don't think they are relevant to the problem at hand (but I'm not a Window systems guy).

Any ideas?

Jeff


Attached Files
File Type: txt sfcdetails.txt (36.6 KB, 541 views)
My System SpecsSystem Spec
15 Jan 2010   #8
Brink
Microsoft MVP

64-bit Windows 8.1 Enterprise
 
 

Jeff,

You might see if toggling thumbnail previews off an on may reset it to show properly afterwards.

No, the tcpmon.ini file wouldn't have anything to do with this. However, here is a clean copy of it below to replace your corrupted one with. You would just need to take ownership of your C:\Windows\System32\tcpmon.ini file and "Allow" "Full Control" of it to your user account, then copy and replace it with the new one.


Attached Files
File Type: zip tcpmon.zip (7.4 KB, 631 views)
My System SpecsSystem Spec
15 Jan 2010   #9
Jeff P

Win 7 Home Premium
 
 

Shawn:

I believe a co-worker pointed me to the real problem. There is a thumbnail image embedded within the jpeg file that matches the original uncropped image. Flushing the the thumbnail cache will never fix the issue I have because Windows will just reload the original picture from the original, uncropped thumbnail stored within the cropped image. I need to physically go into the jpeg file and figure out how to rewrite the thumbnail to match the current form of the image. So its googling I go ....

I do want to thank you for all of your help. If you do have ideas about where I might find a utility that can automatically rewrite the internal thumbnail file to match the cropped version of the image I'd love to hear them.

Take care.

Jeff
My System SpecsSystem Spec
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