cRIO Periodically Disconnects from Computer when Connected by USB

Updated Dec 9, 2022

Reported In


  • CompactRIO Controller


  • NI-RIO

Issue Details

My cRIO keeps disconnecting from my PC when connected by USB. I can't ping it or see it in NI MAX. The only way to alleviate the issue is by unplugging the USB cable and by plugging it back in. How do I fix this?


The cRIO may be disconnecting for a variety of reasons. The following steps can help determine the root cause. 
  • Try testing another USB cable.
  • Try using another USB port on your PC.
  • Update your drivers, BIOS, and OS. A bug could be causing your USB controller to disconnect from devices after a prolonged period of time.
  • Your USB port may be entering into a power save mode. You can follow the steps in USB Device Disconnects and Reconnects Periodically on Windows PC to see your computer's settings.