PXI Devices With Red Cross in NI MAX

Updated Nov 6, 2018

Reported In


  • PXI Chassis
  • PCI-MXI-2
  • PXIe-1073
  • PXIe-6361
  • PXIe-4138
  • PXI-6515
  • PCIe-8361


  • Measurement & Automation Explorer (MAX)

Issue Details

When I open NI-MAX, all or most of my PXI cards have a red cross, as seen on this image.

I also have a VI that runs a task with these resources but it is not working anymore. I would like to know how to fix this.


Expand the chassis tab, to see if the cards have been recognized and have a different name. If they are there, just: 
  • Right-click on the cards with the red cross and eliminate them from NI MAX.
  • Rename the new instance of the cards to have the same name as the others had.
If the cards are not there, here are some steps to troubleshoot this issue:
  • If you are using a chassis with a MXI remote controller, ​complete a power cycle of the system:
    • Turn off the chassis.
    • Turn off the PC.
    • Turn the chassis on
    • Turn the PC on.
  • If you don't have an MXI controller or if you still have the issue after completing the power cycle, reset the NI MAX database with this guide: How to Fix or Reset the NI MAX Database File 
  • After doing that, if the behavior persists, try reinstalling the DAQmx drivers you have on the machine.
  • The next step, if none of the above solve the issue, is perform a force resintall of the drivers, using this guide: Force Reinstall Non-Working or Corrupt NI Software

Additional Information

Possible reasons are:
  • This may have been caused by the computer reboot or a change in the hardware, the devices were enumerated again. In other words, they were recognized again and have different names as they did before.
  • Also, turning the chassis off and on without rebooting the computer might lead to the computer not recognizing the chassis, since the MXI controller behaves like a PCI card, which, if plugged after the PC has booted, it probably won't be recognized.


Not Helpful