You need to change the WINUSB_DEMO_GUID_STRING string to correspond to the ClassGuid item in your inf file. Does the Win32 driver load correctly? Does your device show up in Device Manager without any exclamation mark?
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RE: USB CDC Communication to Microcontroller
You need to change the WINUSB_DEMO_GUID_STRING string to correspond to the ClassGuid item in your inf file. Does the Win32 driver load correctly? Does your device show up in Device Manager without any exclamation mark?