LabVIEW Installer Build Fails with Timestamp Authority URL Error

Updated May 11, 2026

Reported In

Software

  • LabVIEW Application Builder Module

Issue Details

When trying to build an installer for my application, I get the following message:

CodeSignAPI.lvlib:Get Signing Error String.vi<ERR> 
Error: The Timestamp Authority URL specified does not point to a valid Timestamp Authority server, or an unknown error occurred. 
<b>Complete call chain:</b> 
CodeSignAPI.lvlib:Get Signing Error String.vi 
CodeSignAPI.lvlib:Sign with Certificate.vi 
IB_MSI.lvclass:Sign_Setup.vi 
IB_MSI.lvclass:Build.vi 
CDK_Engine_Main.vi 
CDK_Build_Invoke.vi 
CDK_Build_Invoke.vi.ProxyCaller 

I was able to build the installer before, what could be causing this issue?

Solution

Open the properties of your installer or application, navigate to the Windows Security section, and uncheck Apply Digital Signature. This property is not selected by default.

Additional Information

If you require a digital signature, ensure that you're following the steps listed in User Account Control, Digital Signing, and Manifests in LabVIEW Built Applications.

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