If you see “MxT USB Device” in an unknown state, unplug the device, delete the driver from C:\Windows\System32\drivers\mxtser.sys (if it exists), and start fresh. Windows 11 remembers failed driver states stubbornly. A clean slate fixes 90% of issues.
You plug in the device. Device Manager shows "MxT USB Device" with a yellow triangle. Error Code 10: "This device cannot start." Mxt Usb Device Driver Windows 11
★★★☆☆ (3.5/5) “Works perfectly after two rituals and a reboot. For a hobbyist, that’s fine. For a professional, buy a modern FTDI chip-based device instead.” If you see “MxT USB Device” in an
Verdict: Works flawlessly, until it doesn’t. Then you’ll question your sanity. unplug the device