If your laptop does not feature a native serial port, use a high-quality . Ensure you install the latest drivers for the adapter (FTDI or Prolific chipsets work best) and assign it to a low COM port number (such as COM1, COM2, or COM3) within the Windows Device Manager, as legacy software often cannot detect COM ports above COM8. Troubleshooting Common VTwin 5.24 Errors
Restart Windows in Disable Driver Signature Enforcement mode, then reinstall the necessary communication drivers. Font or Display Glitches in the Workspace Esa Vtwin 5.24 Downloadl