If the system still fails to load the driver, you may need to clear corrupted filter entries in the registry. Press Win + R , type regedit , and press Enter.
: Go to Settings > Privacy & security > Windows Security > Device security . mastercam+x72022+virtual+usb+bus+error+39+fixed
This is the most frequent fix for modern Windows 10 and 11 systems where security features prevent the Virtual USB Bus driver from loading. If the system still fails to load the
In the right pane, look for or LowerFilters and Delete them. Restart your computer. Troubleshooting Additional Causes Mastercam USB HASP issue - eMastercam.com mastercam+x72022+virtual+usb+bus+error+39+fixed
Right-click the "Virtual USB Bus" or "HASP" device with the yellow exclamation mark and select .
