All the instructions I have seen, and also on my site, is the procedure to allow unsigned drivers.

https://elmassian.com/index.php/dcc/specific-manufacturers/qsi-equipment/qsi-programmer-hw-a-sw

There's also 2 different drivers, depending on what generation of tools you are using... I'm using the older driver with the older CV Manager since I need the "engineering" menu for features that are not accessible on the current CV Manager