If you have ever tried to connect a legacy serial device—such as an industrial PLC, a GPS receiver, a barcode scanner, or an Arduino clone—to a modern Windows 10 or Windows 11 PC, you have likely encountered the "USB-COM" conundrum. The bridge between your USB port and a virtual COM port is a small but critical piece of software: the .
: Eliminates the need for physical serial adapters or code changes in old middleware.
v6.3.2 was signed with SHA-1, which Microsoft deprecated after Windows 10 1709. usb-com driver v6.3.2
Despite its stability, users frequently encounter problems. Here is a systematic troubleshooting guide.
After installation, check the version using: If you have ever tried to connect a
After installation and reboot:
Update to v6.3.2 to benefit from performance gains and the buffer overflow fix. v6.3.2 was signed with SHA-1
A: Windows 10’s inbox driver (version 6.4.0+) is taking precedence. Follow the manual installation steps in Part 3 to force v6.3.2.