Which versions of Windows ideCAD works? ideCAD works on all versions of Windows 10 and above 64 bit. Next Topic When I click to open the ideCAD, I get a direct stopped working error. Related Topics I can't run the demo version. Encountered an improper argument warning appear, what should I do? The ideCAD opens very slowly and runs slowly. How to define network dongles on client computers from host computer? I get a hasp error while running the ideCAD. What should I do?