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

Updated Aug 1, 2018

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 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 may also need to make sure the LabVIEW FPGA Module is installed and matches the LabVIEW version, or you will have similar issues accessing the device's FPGA.

On your computer, open NI Measurement and Automation Explorer and expand the Software tab. Ensure you have the following compatible software and drivers listed: 

This can also happen if you open your project in LabVIEW 64-bit. As of LabVIEW 2018, there is not 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. If you are not sure, you can select Help > About LabVIEW in your LabVIEW program to check the version and bitness.

Additional Information

Installing the PXI Platform Services and LabVIEW Real-Time Module compatible versions will only enable using 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. For examples, if you are using PXI DAQ devices, you can find the information in the NI-DAQmx readme (i.e. NI-DAQmx 18.0 Readme) or in  NI-DAQmx and LabVIEW Compatibility.

With a CompactRIO, this can also occur by not having compatible drivers installed. You can check the versions that are required by your hardware on the NI-RIO and LabVIEW Compatibility page to find what NI-CompactRIO versions are compatible with your LabVIEW and LabVIEW Real-Time Module versions.


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