Yellow Exclamation Mark Next to Real-Time Target in LabVIEW Project

Updated Jun 11, 2021

Reported In


  • CompactRIO Controller
  • PXI Controller
  • CompactDAQ Controller


  • LabVIEW
  • LabVIEW Real-Time Module
  • LabVIEW FPGA Module


  • NI CompactRIO

Issue Details

When I open a LabVIEW project including a Real-Time target like a CompactRIO (cRIO), CompactDAQ (cDAQ) or Real-Time PXI, I see a yellow exclamation mark next to my target. When I click on the target, I get the following message, but NI License Manager shows that all of my software is licensed.

Unsupported Item

The plug-in for the selected item is not installed on your system or the plug-in has an expired license. Please contact National Instruments.


The most common cause for this is the LabVIEW Real-Time Module not being installed or having an incompatible version. The LabVIEW and LabVIEW Real-Time versions must match. If you are using a CompactRIO, you should also make sure the LabVIEW FPGA Module is installed and matches the LabVIEW version or you will have similar issues accessing the device's FPGA. 

  • To check this, open NI Measurement and Automation Explorer (MAX) and expand the Software tab:
    • Ensure you have the Real-Time Module listed under the version of LabVIEW you are using. If you have a CompactRIO, ensure that you have installed the FPGA Module so that you can program the FPGA as well.

  • This issue can also occur if you open your project in LabVIEW 64-bit. As of LabVIEW 2018, there is no LabVIEW Real-Time Module or FPGA Module support for the 64-bit version of LabVIEW. Ensure you are opening your project in LabVIEW 32-bit.
    • You can check the version and bitness in LabVIEW by selecting Help > About LabVIEW.  

Additional Information

Installing compatible versions of the PXI Platform Services and LabVIEW Real-Time Module will only enable you to use the controller in LabVIEW. The drivers of any cards installed in the PXI Chassis must also be installed and compatible with the LabVIEW and LabVIEW Real-Time version. Refer to your driver's documentation to check the compatibility.