Why does my USB device work on Windows 8.0 but fail on Windows 8.1 with code 43? - Microsoft Community Hub
![Download and install Thesycon USBIO Device: VID=1F3A PID=EFE8 USB Device VID_1f3a_PID_efe8 - driver id 1278523 Download and install Thesycon USBIO Device: VID=1F3A PID=EFE8 USB Device VID_1f3a_PID_efe8 - driver id 1278523](https://www.drivermax.com/download/Thesycon-USBIO-Device-VID-1F3A-PID-EFE8-USB-Device-VID-1f3a-PID-efe8_1278523.jpg)
Download and install Thesycon USBIO Device: VID=1F3A PID=EFE8 USB Device VID_1f3a_PID_efe8 - driver id 1278523
Why does my USB device work on Windows 8.0 but fail on Windows 8.1 with code 43? - Microsoft Community Hub
![Download and install Thesycon USBIO Device: VID=1F3A PID=EFE8 USB Device VID_1f3a_PID_efe8 - driver id 1278523 Download and install Thesycon USBIO Device: VID=1F3A PID=EFE8 USB Device VID_1f3a_PID_efe8 - driver id 1278523](https://www.drivermax.com/images-story/danielstatescu.jpg)