Windows 11's "Memory Integrity" feature often blocks the MultiKey driver because it uses older, unsigned, or non-HVCI-compliant code. How to Fix USB Driver Error Code 39 - Matsusada Precision
To deploy Virtual USB Multikey Code 39 on Windows 11, users must ensure their system meets the following technical requirements: Virtual Usb Multikey Code 39 Windows 11
bcdedit /set testsigning on
