If you’ve installed a certain type of Mastercam license—most commonly the HASP (Hardware Against Software Piracy) USB dongle or its emulated counterpart—you’ve likely seen the “Mastercam X7-2022 Virtual USB Bus” driver appear in your Windows Device Manager.
: Open Device Manager . You should see "Virtual USB Multikey" under System Devices and "SafeNet Inc. HASP/USB Key" under Universal Serial Bus Controllers. Troubleshooting "Error 39" or "Link Failed"
: Disable Memory Integrity (Core Isolation) in Windows Security settings. Modern Windows versions often block these unsigned or legacy virtual drivers by default.
The virtual USB bus driver is backward compatible and works across several versions:
: Run the driver installer (e.g., install.bat or mkinstall_x64.exe ) as an Administrator. You should see a "Drivers installed successfully" message.
:
Look under "Universal Serial Bus controllers." If you see "Virtual USB Bus" with a yellow exclamation mark, the driver is blocked by Windows security.
:
While some users turn to emulators for educational practice or to keep older workstations alive, utilizing virtual USB links carries profound security and operational liabilities. Risk Category Consequences and Impact
X7 relied heavily on Aladdin HASP drivers. These drivers looked for predictable cryptographic tables stored in the hardware. Virtual USB bus links for X7 were relatively simple to implement using standard Windows Driver Kit (WDK) frameworks, requiring users to put Windows into "Test Mode" to accept unsigned virtual drivers. Mastercam 2022 Security
Select the computer name, click , and choose Add legacy hardware .