Navigate to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class .
Community reports on the Google Groups Mastercam Forum suggest that hard program crashes can corrupt the active Windows user profile, mimicking driver errors. Log into a secondary administrator account. Back up your personal files from C:\Users\[YourUsername] . mastercam x72022 virtual usb bus error 39 updated
| Step | Action | |------|--------| | 1 | Disable Driver Signature Enforcement (temp) | | 2 | Uninstall broken Virtual USB Bus driver | | 3 | Reinstall original driver as Admin | | 4 | (Recommended) Switch to MultiKey signed driver | | 5 | Disable Secure Boot in BIOS | | 6 | Reboot and test Mastercam X7 | mastercam x72022 virtual usb bus error 39 updated