!free! - Mastercam+x72022+virtual+usb+bus+error+39+fixed
: Open Command Prompt as Administrator and run:
If the error persists, there may be "ghost" entries in the Windows Registry preventing the driver from initializing. Press Win + R , type regedit , and hit Enter.
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\36FC9E60-C465-11CF-8056-444553540000 In the right pane, look for UpperFilters . Right-click and select your system. Driver Refresh Steps
If the registry fix doesn't work, try a full reset of your USB stack. Open ( devmgmt.msc ). Expand Universal Serial Bus controllers . mastercam+x72022+virtual+usb+bus+error+39+fixed
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\36FC9E60-C465-11CF-8056-444553540000
The most common cause of Error 39 on Windows 10 and 11 is the Memory Integrity feature. It aggressively blocks the virtual USB emulators used by older software.
This is a severe form of Code 39. It means Microsoft has specifically identified the digital certificate used to sign that driver as compromised and has added it to a global revocation list. Your only real options are the complete driver clean-up methods described in this guide, or disabling driver signature enforcement at every boot. Using the latest version of the Multikey driver (which may have a different signing method) is your best bet. : Open Command Prompt as Administrator and run:
Below is a structured guide to resolving the "Virtual USB Bus Error 39." The methods are listed in order of simplicity, and it is recommended to try the first solution before moving to the more advanced ones.
: Ensure your antivirus software isn't quarantining critical Mastercam or HASP driver files.
AddReg = HASP_VBus_AddReg.NT
: Always export a registry backup before modifying critical system class keys.
Download the official, updated from the Mastercam or Thales support portal.
Below is a comprehensive guide to resolving this error and getting your HASP back online. 1. Disable Core Isolation (Memory Integrity) Right-click and select your system
