If this command returns a directory name, you must delete it. If the folder is in use, you may need to use a tool like or Dism++ to launch a TrustedInstaller-level Command Prompt to delete it.
Open regedit as Administrator. Navigate to: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\36FC9E60-C465-11CF-8056-444553540000 Mastercam X7-2022 Virtual Usb Bus Error 39
Corrupted registry filters attached to the USB controller class can hard-lock Error 39. Clearing them forces Windows to rebuild the stack. Press Win + R , type regedit , and hit Enter. If this command returns a directory name, you must delete it
This removes all traces of the old driver and clears the virtual bus. Run the installer you downloaded in Step 1. Restart your computer. Mastercam X7-2022 Virtual Usb Bus Error 39