This driver acts as a "bridge" between the operating system and a software license emulator. It tricks the computer into believing a physical USB protection key is plugged in, even when it isn't. groups.google.com Software Association:
Often bundled with "cracked" or pirated versions of Mastercam. Technical Role:
It installs as a "System Device" in the Windows Device Manager, typically labeled as Virtual USB Bus Enumerator Common Error 39:
Users frequently report a "Code 39" error in Device Manager, which usually indicates that Windows cannot load the device driver because it is corrupt, missing, or blocked by security features like Memory Integrity (Core Isolation) in Windows 10/11. groups.google.com Risks and Technical Issues mastercam x72022 virtual usb bus
Using a virtual USB bus for software licensing carries significant risks: Security Vulnerabilities: These drivers often require disabling Driver Signature Enforcement , which leaves your system open to malware and rootkits. System Stability:
As seen in user reports, these emulators can cause Mastercam to appear in the Task Manager but fail to launch, or require multiple reboots and port changes to function. Windows Updates:
Modern Windows security updates frequently break these virtual drivers, leading to "HASP not found" errors. groups.google.com Legitimate Alternatives For users experiencing legitimate hardware key issues: Software-Based Licensing: This driver acts as a "bridge" between the
Mastercam transitioned toward software-based licensing (no USB key required) in newer versions. Driver Updates:
Official Sentinel/Aladdin HASP drivers should be downloaded directly from the Thales Group (formerly SafeNet) website to ensure compatibility with Windows 10 and 11. groups.google.com Are you trying to resolve a specific error code (like Code 39 or 52), or are you looking for installation instructions for a specific version? Mastercam X7-2022 Virtual Usb Bus Error 39 - Google Groups
A failed installation of the virtual bus is the #1 reason Mastercam X72022 returns the dreaded error: "No license found. Check USB dongle." Cause: The virtual bus is polling a dead USB port
Follow this exact protocol:
nvlddmkm.sys or usbport.sys. Restart the Mastercam License Manager service (NetHASP or CodeMeter.exe).| Your situation | What to do | |----------------|-------------| | You own a license but lost the dongle | Contact your Mastercam reseller for a replacement (cost ~$150-300). | | You want to run Mastercam on a VM | Use USB over Network (e.g., VirtualHere) with a real dongle – cleaner than virtual bus. | | You downloaded a cracked "Mastercam X72022" | Uninstall it. Get the free Mastercam Learning Edition (legal, watermarked) or Fusion 360 (free for hobbyists). | | You must use the virtual bus for legacy/repair | Run in a disconnected, isolated VM (Windows 7 x64) with no internet access. Never install on a main PC. |
If you provide more detail (e.g., "I see Code 10 on Virtual USB Bus in Device Manager" or "I need Mastercam X7 to run on Windows 11"), I can give you the exact registry or driver fix. But be aware that this path leads to fragile, unsupported, and legally risky software use.
usb.generic.allowHID = "TRUE" in the .vmx file. For Hyper-V, disable “Enhanced session mode.”This is the most critical section. The term “Virtual USB Bus” is often associated with software piracy, but legitimate use is widespread.