Virtual USB Multikey remains a powerful tool for handling legacy software that depends on outdated hardware dongles, particularly in the industrial, engineering, and CAD/CAM sectors. Windows 11, with its robust security features, treats such drivers with suspicion and often responds with the frustrating .
Disclaimer: Editing the registry can cause system issues if not done properly. Ensure you have a backup of your registry or a system restore point before attempting Method 2. If you'd like, let me know: Which version of Windows 11 are you on (Home/Pro)? Did this issue occur after a recent update? Share public link
Open , right-click your MultiKey device, and select Uninstall device . In the top menu, click Action > Scan for hardware changes . Virtual Usb Multikey Code 39 Windows 11
Windows 11 has a feature called Memory Integrity within Core Isolation, which prevents unsigned drivers from loading to protect system security.
(Invoking related search suggestions.)
A for a Virtual USB MultiKey driver on Windows 11 typically means the driver is corrupted, missing, or—most commonly—blocked by Windows security features like Memory Integrity (HVCI) .
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\DeviceGuard\Scenarios\HypervisorEnforcedCodeIntegrity ) DWORD value and change it to your PC afterward. Windows 11 Forum Registry "UpperFilters" Cleanup FIX USB ERROR CODE 39 Windows 11 Virtual USB Multikey remains a powerful tool for
This allows you to keep Core Isolation and Driver Signature Enforcement enabled on your main Windows 11 system. Important Security Warning
⚠️ : This step lowers system security temporarily. Do not keep test mode enabled permanently. Ensure you have a backup of your registry
Under the section, click on Core isolation details . Locate Memory integrity and toggle the switch to Off .
(under Core Isolation), which blocks drivers it deems non-compliant. Windows Security from the Start menu. Navigate to Device security Core isolation details Toggle the Memory integrity Restart your computer to apply the changes. Secondary Fixes