Some very sloppy programming by Microsoft here. If you’re anything like me having to explicitly delete Thumbs.db every time you delete a folder is just simply annoying and causes the following system message:

Thumbs-db-is-a-system-file

After trying to somehow fix this I’ve then been getting

 

“The action can’t be completed because the file is open in Windows Explorer. Close the file and try again.”

 

In Windows 7, all the thumbs.db files are saved in the following path.

 

%LocalAppData%\Microsoft\Windows\Explorer