Leica Tc 407 Driver

⭐ 3.5/5 – Functional but frustrating for beginners.
If you need to connect a TC407 to a modern PC:

| Error Message | Cause | Solution | |---|---|---| | “Code 10: Device cannot start” | Faulty Prolific chip or wrong driver | Uninstall the driver, use the official Prolific driver cleaner, then install version 3.2.0.0 or newer. | | “The requested COM port is in use” | Another program (surv software) is holding the port | Close all software. In Device Manager, change the COM port number from 5 to 8 (or any unused number). | | “Data transfer freezes after 10 points” | Flow control mismatch | On the TC 407, set flow control to Software (Xon/Xoff) and in Windows Port Settings, set Flow Control to Xon/Xoff. | | “Driver not signed for Windows 11” | Older FTDI driver | Download the latest FTDI driver from 2024 or newer. Signing is mandatory for Windows 11 22H2+. | LEICA TC 407 driver

✅ Success rate: ~80% with quality adapter and shielded cable. ⭐ 3