Are you trying to connect a , like the 9751 interface, to a Windows 10 or 11 machine?

In the same menu, set the compatibility mode to Windows XP (Service Pack 3) .

Finding a "fixed" download for ldwin.exe is essential for hobbyists and educators using vintage hardware on modern operating systems. Here is everything you need to know about downloading the fix and getting the software running. What is Ldwin.exe?

Right-click ldwin.exe , go to Properties > Compatibility , and check "Run this program as an administrator."