What the error means
Ensure any previous versions are fully uninstalled via before installing new ones. 3. Clear Registry Filters
| Version | Preferred Driver | Common Error 39 Trigger | | :--- | :--- | :--- | | | Sentinel HASP 8.31+ | Windows 11 block of unsigned drivers | | Mastercam 2017-2018 | CodeMeter 6.90a | Corrupt after SolidWorks installation | | Mastercam 2019-2020 | CodeMeter 7.00 | USB 3.0 controller driver conflict | | Mastercam 2021-2022 | CodeMeter 7.10c | Windows 22H2 update incompatibility |
Which (e.g., Windows 10, Windows 11) are you currently running? Mastercam X7-2022 Virtual Usb Bus Error 39
This error is primarily caused by Windows security features blocking older virtual drivers or registry corruption 1. Disable Windows Core Isolation (Memory Integrity)
If you want to pin down the exact issue with your system, tell me:
Go back to Device Manager and check if the Virtual USB Bus warning icon has cleared. Method 5: Update the Virtual Bus Driver Software Manuallly What the error means Ensure any previous versions
If the driver is blocked because it lacks a digital signature, you must temporarily or permanently bypass this Windows check.
The is a critical driver issue occurring on Windows 10 and 11, primarily caused by Core Isolation (Memory Integrity) security features blocking the Virtual USB Bus driver . This error prevents Mastercam from verifying its HASP/NetHASP security dongle, essentially locking the software out of its license. Core Causes
Point the installer directory to the specific folder containing your updated 64-bit emulator driver files ( multikey.inf and multikey.sys ). This error is primarily caused by Windows security
The "Virtual USB Bus Error 39" is primarily a security feature in Windows blocking an unsigned driver. The three most effective solutions are:
The "Mastercam X7-2022 Virtual USB Bus Error 39" is a classic example of a modern operating system blocking outdated but essential software components for security reasons. While frustrating, the issue is almost always fixable by following the systematic steps above.
Sometimes a clean reinstallation of the specific hardware driver is required. Mastercam X7-2022 Virtual Usb Bus Error 39 - Google Groups
Restart your computer to allow the virtual driver to load properly. Step 5: Manually Update the Virtual USB Device
. The driver should now load correctly in Device Manager. 💻 Alternative: Registry Fix