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I was looking in a folder while downloading a batch of images. About 1/4 of the images have bad thumbnails (its mostly or partially grey).

How do i reset/delete them? I tried being clever and moved them to a different folder which it showed correctly. But renamed it to the old folder because of archive, app and batch reasons. But then the thumbs are bad again.

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3 Answers 3

up vote 4 down vote accepted

Under disk cleanup, there is a section for deleting thumbnails. This will clear your thumbnail cache.

Here are the basic steps:

  1. Open Disk Cleanup
  2. In the files to delete, check the Thumbnails box, and click on OK.
  3. Click on the Delete Files button.

Here is the source of those steps - http://www.sevenforums.com/tutorials/10797-thumbnail-cache-clear-reset.html

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Check folder for thumbs.db file and delete it.

Since this file is both system and hidden you will need to show those files. In Explorer press and go to Tools -> Folder options. There select "Show hidden files, folders and drives" and uncheck "Hide protected operating system files". Once you do this, you should be able to see this file and delete it.

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In the top right hand of the Windows Explorer window, there is a drop-down menu that lets you change the size of image thumbnails. Whenever you change the thumnail size, it forces Windows to regenerate the thumbnails. Then when you change back to the previous size thumbnails, it is still fixed.

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