As noted by support specialists, if Mastercam shows up in the Task Manager but does not open, your Windows profile might be corrupted.
In some cases, multiple crashes can corrupt a user profile, preventing the USB key from being recognized. Step-by-Step Fixes for Virtual USB Bus Error mastercam x72022 virtual usb bus error link
If you are using a virtual emulation tool for a network license: Open . As noted by support specialists, if Mastercam shows