If when you try to move, delete, copy, or rename files/folders in Windows 11/10 and you see the Invalid MS-DOS Function error message, this guide will help to fix it.

UltraCopier is plenty speedy when you run it wide open, but includes a speed regulator for those times you don't want to saturate your network or choke a drive during extended file transfers.

vDos and DOXBox are free applications that lets you run old DOS Programs & DOS Games in Windows 11/10. This article shows how to use them in detail.