Could Not Connect to the Log-In Service of CompactRIO

Updated Jul 25, 2023

Reported In


  • cRIO-9040
  • cRIO-9041
  • cRIO-9042
  • cRIO-9043
  • cRIO-9045
  • cRIO-9046
  • cRIO-9047
  • cRIO-9048
  • cRIO-9049


  • Measurement & Automation Explorer (MAX)

Issue Details

When I try to log in into the cRIO, the following message is shown:

NI-cRIO-90XX-XXXXXXXX (X.X.X.X): The selected target does not support this function.



It then shows a different Log In window but it also fails to log into the cRIO. It shows the following error message:

Could not connect to the log-in service. Make sure the target is turned on, connected to the network and not in safe mode.


What can I do?


There are different things you can try:
  • Make sure your firewall is properly configured .
  • Ensure you have a compatible version between the CompactRIO driver and your cRIO controller.
  • Try deleting the device in MAX and re-adding it.
  • Try using the Remote System Discovery tool in MAX.
  • Try from a different computer/make sure it is on the same subnet.
  • Try checking the "Disable RT Startup App" box in System Settings of the cRIO.
  • Try to restore the controller in MAX.

Additional Information

Security policies installed on the OS of the host computer sometimes could prevent it from logging into the cRIO controller.