How to Stop and Prevent Windows from Deleting the Thumbnail Cache

   Information
This tutorial will show you how to stop and prevent Vista and Windows 7 from deleting and clearing the thumbnail cache and causing you to not have thumbnail previews until reloaded again.

This is a good workaround if Windows is randomly deleting and clearing your thumbnail cache.

You must be logged in as an administrator to be able to do this tutorial.






OPTION ONE

To Prevent Windows from Deleting the Thumbnail Cache


NOTE: This option will only stop and prevent Windows from being able to delete the thumbnail cache. This will not prevent users from being able to manually delete or from using Disk Cleanup to delete their thumbnail cache.
1. In Windows Explorer, navigate to the hidden system folder below, right click on the Explorer folder, and click on Properties. (see screenshot below)
C:\Users\User-Name\AppData\Local\Microsoft\Windows\Explorer

Thumbnail Cache - Prevent Windows from Deleting-step-1.jpg
2. Click on the Security tab, then click on the Advanced button. (see screenshot below)
Thumbnail Cache - Prevent Windows from Deleting-step-2.jpg
3. In the Permissons tab, select (highlight) the SYSTEM entry, and click on the Change Permissions (Windows 7) or Edit (Vista) button. (see screenshots below)
Thumbnail Cache - Prevent Windows from Deleting-step-3_seven.jpgThumbnail Cache - Prevent Windows from Deleting-step-3_vista.jpg
4. Select (highlight) the SYSTEM entry, and click on the Edit button. (see screenshot below)
Thumbnail Cache - Prevent Windows from Deleting-step-4.jpg
5. Scroll down a bit, check the Deny box for both the Delete subfolders and files and Delete permissions items, then click on OK. (see screenshot below)
Thumbnail Cache - Prevent Windows from Deleting-step-5.jpg
6. Click on OK. (see screenshot below step 4)

7. Click on Yes. (see screenshot below)
Thumbnail Cache - Prevent Windows from Deleting-step-6.jpg
8. Click on OK. (see screenshots below step 3)

9. Click on OK. (see screenshot below step 2)

   Note
If this still doesn't help afterwards, then repeat the steps above for each user and group listed under the Name column (step 3) to prevent everything from being able to delete the thumbnail cache.






OPTION TWO

To Allow Windows to Delete and Clear the Thumbnail Cache


NOTE: This is the default setting. This option is to undo OPTION ONE above.
1. In Windows Explorer, navigate to the hidden system folder below, right click on the Explorer folder, and click on Properties. (see screenshot below)
C:\Users\User-Name\AppData\Local\Microsoft\Windows\Explorer

Thumbnail Cache - Prevent Windows from Deleting-step-1.jpg
2. Click on the Security tab, then click on the Advanced button. (see screenshot below)
Thumbnail Cache - Prevent Windows from Deleting-step-2.jpg
3. In the Permissons tab, select (highlight) the SYSTEM entry with Deny as the type, and click on the Change Permissions (Windows 7) or Edit (Vista) button. (see screenshots below)
Thumbnail Cache - Prevent Windows from Deleting-remove-3_seven.jpgThumbnail Cache - Prevent Windows from Deleting-remove-3_vista.jpg
4. Select (highlight) the SYSTEM entry with Deny as the type, and click on the Remove button. (see screenshot below)
Thumbnail Cache - Prevent Windows from Deleting-remove-4.jpg
5. Click on OK. (see screenshot)
Thumbnail Cache - Prevent Windows from Deleting-remove-5.jpg
6. Click on OK. (see screenshots below step 3)

7. Click on OK. (see screenshot below step 2)
That's it,
Shawn