LabVIEW Error 7 Occurred When Using HTTP Client VIs on Real-Time Controller

Updated May 22, 2023

Reported In


  • CompactRIO Controller


  • LabVIEW Real-Time Module

Issue Details

I am trying to publish data on a Web GUI using LabVIEW HTTP Client VIs. When I run this code on my host computer is works fine. However, when I run this code on a cRIO controller, I get the following error:

Error 7 occurred at Call Library Function Node in>

Possible reason(s):

LabVIEW: (hex 0x7) File not found. The file might be in a different location or deleted. Use the command prompt or the file explorer to verify that the path is correct.


Install the HTTP Client with SSL Support on your real-time controller to use LabVIEW HTTP Client VIs.