Why does LabWindows™/CVI Say I am Missing dataacq.h?

Updated Oct 17, 2022

Reported In


  • LabWindows/CVI


  • Traditional NI-DAQ
  • NI-DAQmx

Issue Details

I am trying to run an application in LabWindows/CVI, but when I hit the run button, a popup says that:

CVI is Unable to Find The File "dataacq.h"

How do I find this file?


The file "dataacq.h" is not installed by CVI, but is installed by the Traditional NI-DAQ driver. To fix this problem, run the NI-DAQ setup again and select the LabWindows/CVI Support. Please refer to the screenshot of the NI-DAQ setup below.