Error -1074384758 or -1074384895 using NI-XNET Create Session

Issue Details

• My NI-XNET session in LabVIEW is generating error -1074384895. How can I fix this?
• When I try to create an NI-XNET session I get either Error -1074384758 or Error -1074384895: NI-XNET: (Hex 0xBFF63001) An internal error occurred in the NI-XNET driver.  Why is this and how can I correct this issue?

Solution

• If you are using a CompactDAQ (cDAQ) chassis and have multiple NI-DAQmx tasks already running, this is the result of a known issue that has been corrected in NI-DAQmx versions 17.1.1 and later. Upgrade your DAQmx driver to version 17.1.1 or later to add the patch. If upgrading DAQmx is not an option for your system, the following workarounds can be applied:
  • Create your XNET session prior to creating your DAQmx tasks.
  • Downgrade to NI-DAQmx 15.0, if your hardware is supported.
• The C-Series module or cDAQ/cRIO chassis may have been removed from the system either intentionally or through a USB driver issue, or the chassis had a problem and failed to notify NI-XNET. Upgrade to NI-XNET 17.5 or later as there were improvements that will help you resolve this issue.
• The Queue Size parameter is not properly configured for your application.If using the USB-8502, verify that the correct port is selected and that it is properly connected to the PC and bus.
• If you are using a memory database, ensure the memory database I/O mode matches with the database used for another session.
• This error could be due to memory allocation and not related to the XNET driver. Check Windows Task Manager or Performance Monitor to see if memory growth is an issue.
• If you are creating multiple XNET sessions, add a delay between the XNET Create Session VIs like in the illustration below.

• If you are using PCI NI-XNET device, please refer to Error -1074384710 When Using PCI NI-XNET Device .
• If the error persists, uninstall and reinstall the NI-XNET driver. Refer to NI Hardware and Software Operating System Compatibility to determine that the version of NI-XNET on the PC is compatible with your hardware.
  • To uninstall the driver, refer to Installing, Updating, Repairing, and Removing NI Software.
  • When reinstalling, ensure that the NI-XNET Compatibility Library for NI-CAN is also reinstalled. Instructions for this can be found in Installing the NI-XNET Compatibility Library for NI-CAN.

• If you encounter Error -1074384895 with NI-XNET 2025 Q3 or earlier when creating a CAN session using Signal Out XY after performing a Signal XY read or write, and you're using a proprietary FIBEX database, the issue may be caused by COMPU-METHOD metadata in the CODING elements of the database.

  • Open and resave the database using NI-XNET Database Editor to remove the problematic metadata.