Expand the or Universal Serial Bus controllers section.
Select your computer name at the top, click > Add legacy hardware . mastercam x72022 virtual usb bus install
Over 10 days of continuous 5-axis toolpath simulation, the virtual bus caused two BSODs, both traced to race conditions in the virtual HCD (host controller driver) when handling simultaneous isochronous and interrupt transfers. Expand the or Universal Serial Bus controllers section
Usually caused by a driver conflict or Windows blocking the unsigned driver. Re-disable driver signature enforcement. "HASP not found" the virtual bus caused two BSODs