My DAQmx Installation is Missing the Library "nidaqmx.h"

Updated Apr 19, 2023

Reported In


  • LabWindows/CVI


  • NI-DAQmx

Programming Language

  • Python
  • C

Issue Details

I am trying to use an object-oriented programming language to program NI hardware using the DAQmx library. The header file is included in my program, and when running I get the following error message. 
​ 'NIDAQmx.h': No such file or directory

What can I do to solve this issue?


The header file NIDAQmx.h should be located in the following folder:

Program Files (x86)\National Instruments\NI-DAQ\DAQmx ANSI C Dev\include\NIDAQmx.h

If it is missing, try these steps: