The following blog post outlines why this happens and how to fix it using verified methods.
, right-click the "Virtual USB MultiKey" device with the yellow exclamation mark, and select Uninstall device Remove Old Files: Virtual Usb Multikey Code 39 Windows 11
The phrase “Virtual USB Multikey Code 39 Windows 11” encapsulates a classic modern computing dilemma: keeping expensive legacy machinery or software alive on a security-hardened OS. While technical workarounds exist — disabling protections, manually cleaning device instances, or using VMs — they come with significant stability and security trade-offs. For most professional environments, the wiser path is hardware isolation (a separate legacy PC) rather than forcing an emulator into Windows 11’s kernel. Code 39 is not a bug; it’s Windows 11 telling you that the driver belongs to a bygone era. The following blog post outlines why this happens
Ensure your barcode scanner can work with Windows 11. Most modern scanners are plug-and-play. For most professional environments, the wiser path is
A virtual USB multikey Code 39 is a software-based emulation of a physical USB multikey that uses the Code 39 barcode symbology to authenticate and authorize access to a computer or network. This technology allows users to create a virtual USB key on their Windows 11 device, eliminating the need for a physical key.
Corrupted "UpperFilters" or "LowerFilters" in the registry can also trigger Code 39.