Forum Discussion
A Serious Bug in Windows Explorer
When you need an icon (thumbnail) that displays a picture or video file, it can't be displayed and Windows Explorer keeps loading. When you right-click on such a file, Windows Explorer freezes.
Sometimes, the thumbnail cache gets corrupted. You can clear it out by opening the Disk Cleanup tool, selecting your system drive (usually C:), and checking the box for "Thumbnails" before hitting OK.