To show icons faster, Windows caches them into a file. This special file contains icons for many apps and file types, so File Explorer doesn't need to extract the icons for known file extensions and apps. This allows File Explorer to work faster.
If icons in your Windows 10 File Explorer look strange or broken, your icon cache might have become corrupt. This issue is very common for all Windows versions. In this article we will see what to do to fix broken icons and reset the icon cache.