Winsage
October 3, 2026
Windows 11 uses a thumbnail caching mechanism to store previews of images in specific databases located in %LocalAppData%MicrosoftWindowsExplorer, such as thumbcache32.db and thumbcache1024.db. When a user deletes an image, the corresponding thumbnail may remain in the cache, as deletion does not automatically remove it from the thumbnail database. The cache retains only reduced versions of images, not the original files, which is significant in digital forensics where thumbnails can provide insights even when original files are missing. Users can manage their thumbnail cache using the cleanmgr tool to clear saved thumbnails or disable thumbnail caching through the Local Group Policy Editor or File Explorer settings.
