When I have seen this issue it usually because the drivers did not install properly. Plugging in the hardware before software was installed or just didn't take properly for some other reason.
Just an idea....
Have you removed the device from device manager and tried to install it again?
With the scope plugged in and PicoScope closed, go into device manager and uninstall that device. Then unplug it and plug it back in to go through the found new hardware wizard again, making sure to select automatic install. On some PCs, you will be encounter two found new hardware wizards. Be sure to wait a minute in case you get a second one.
THE PicoScope Automotive Authority
In North America