LabVIEW Error 1386: The Specified .NET Class is Not Available in LabVIEW

Updated Sep 4, 2018

Reported In

Software

  • LabVIEW

Operating System

  • Windows

Issue Details

​I have a LabVIEW VI or I downloaded the exercises and solutions for the "Developing Test Programs Using TestStand" but when I run my VI I get:
Error 1386:
The specified .NET class is not available in LabVIEW.

 

Solution

This issue occurs in Windows 7 and later when Windows blocks access to an Assembly.

To resolve this, right-click the assembly and click Unblock on the General tab to grant an assembly full trust.

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