Hi Henri,
That problem can come from either your USB subsytem, or your dungles drivers, or your dungles themselves.
As I doubt that all your dungles died at the same time, it's probably USb or drivers.
So, now, I suggest that:
- of course, you restart your machine and try again
- try each dungle independently n a direct USb port
- download the latest version of dungle driver from the dungle site and reinstall them. All that is described in an article on the pcsoft web site support blog.
Best regards