Here’s a draft blog post addressing the —a known licensing/hardware emulation issue.
A “virtual USB bus error” when using Mastercam (commonly reported for versions like X7 up through 2022) typically appears while installing or running dongle/licensing utilities, hardware keys (USB dongles), or USB-emulation drivers. The error indicates the OS, the licensing system, or a virtualization/driver layer cannot properly enumerate or communicate with the USB dongle. mastercam x72022 virtual usb bus error link
The only permanent fix is to purchase a legal license from your local Mastercam reseller. Pirated versions will continue to break with every Windows update, and you risk malware from virtual bus drivers. Here’s a draft blog post addressing the —a