Virtual Usb Multikey Code 39 Windows 11 May 2026
The on Windows 11 is a frequent driver conflict where the operating system fails to load the device driver because it is perceived as corrupted, missing, or blocked by modern security features. This error is common for users of specialized software—such as Mastercam or SafeNet Sentinel hardware dongles—that rely on virtual bus emulators for license verification. Primary Causes of Code 39 in Windows 11
This is the most common culprit in Windows 11. The feature blocks drivers that do not meet strict security standards. Virtual Usb Multikey Code 39 Windows 11
Invalid entries in the "UpperFilters" or "LowerFilters" registry keys can prevent the driver stack from loading. The on Windows 11 is a frequent driver
Windows 11 often rejects unsigned or older emulated drivers used by MultiKey. Step-by-Step Fixes for Virtual USB MultiKey 1. Disable Core Isolation (Memory Integrity) Virtual Usb Multikey Windows 10 Mastercam - Google Groups The feature blocks drivers that do not meet
samirbehara
And still have problem on build server after that… 😦
LikeLike
Samir, have you had similar issues with Visual Studio 2019? Have you found a solution for it?
LikeLike
Had the similar issue, and following worked for me, sharing if people are still facing this issue:-
had to mark the Specific Version = False for the following References in the TEST project
Microsoft.Data.Tools.Components
Microsoft.Data.Tools.Schema.Sql
Microsoft.Data.Tools.Schema.Sql.UnitTesting
Microsoft.VisualStudio.QualityTools.UnitTestFramework.dll
do not set Specific Version = False for the following reference, not sure why but it breaks the test project, and it stays unloaded unless you fix the property in the project code manually.
hope it helps.
LikeLiked by 1 person
Microsoft.Data.Tools.Schema.Sql.UnitTestingAdapter (leave it as Specific Version = True)
LikeLike