Copying thousands of small files mixed with large ones in Windows Explorer can take days — with no guarantee of finishing. One locked file stalls everything, errors tell you nothing, and you never know what actually made it through. RoboExtension fixes this with the same Ctrl+C, Ctrl+V, right-click — no workflow change. Only up to 10× faster small-file copies, same-volume moves 406× faster, drive-type detection, locked file handling, retry as Administrator, and a post-operation failure report.