USB disk won't connect for authentication

I've just loaded Parallels Lite and Windows 10 (Home) onto my Mac Air. All seems fine, but I cannot get the USB for a program (Responsa 19) to connect to Windows. The program requires the original USB to be connected for authentication, and when I try to run it I get an Application error - Please insert the original USB disk and try again.

The USB device connects correctly to MacOS (High Sierra 10.13.1) but it dies not appear as a device in the Parallels Devices>External Devices menu. I can access it as a linked drive from the Mac (it appears as Drive X) but this isn't good enough for the program to recognise it for authentication.
This particular device is formatted as Universal Disk Format (UDF), so perhaps I need to connect it differently from a standard MS-DOS formatted drive?

Other USB drives (MS-DOS - FAT32) I have tested seem to connect fine.

 

Hello DavidG29, please click on two red lines (On the Mac menu bar) > Configure > Hardware > USB preference > connect the usb to Mac and see if this helps. Thanks!

 

Thanks for the response.
I've tried setting the preference to all three options in turn, but in every case the USB is only recognised by the Mac, so that the Windows program won't run, since it checks to see that the original USB is connected to prevent unauthorised copying.

It seems that the (Windows) program is treating the USB drive as if it were a CD. Indeed the USB is formatted as "Universal Disk Format (UDF)" which seems to confirm this. I've tried to connect the USB as a CD, but Parallels looks for a file image on the USB, so I can't connect the USB drive itself.

Anyone have any more ideas?

 

Hello @DavidG29 , please try the steps suggested at http://kb.parallels.com/111725 and check if it works.
Thanks