Error -1074118655, 1073807343 or 1074118644 When Addressing a PXI Device

Updated Jan 9, 2019

Reported In


  • NI-DMM
  • NI-DCPower
  • IVI Compliance Package

Issue Details

When I try to open a session to my PXI instrument (NI-DMM, NI-FGEN, NI-SCOPE, NI-HSDIO, NI-SWITCH, NI-DCPower) or try to validate my virtual device in NI Switch Executive, I get one of the following errors:
DriverError Code
NI Switch Executive-1074118644


These errors usually occur when you address the instrument with a VISA resource descriptor (e.g. PXI1::15::INSTR) instead of a DAQ or DAQmx resource descriptor (e.g. DAQ::1::INSTR for Traditional DAQ, Dev1 or PXI1Slot1 for DAQmx). Make sure that you are using the correct resource descriptor for the driver you are using to communicate with your device.

These errors can also occur when there is a mismatch between your device and driver (e.g. Opening an NI-FGEN session with a PXI DAQ card instead of using NI-DAQmx). Check to make sure you are using the appropriate driver for your hardware.

Another potential cause of these errors is a corrupted MAX database. This can happen for a number of reasons including sudden power loss in the system. Refer to the article How to Fix or Reset the NI MAX Database File for instructions on how to reset a corrupt database.

Lastly, these error codes have also been encountered if one of the modules mentioned above resides in a PXI chassis that has not been identified correctly. Refer to the article PXI Chassis Does Not Appear in Measurement & Automation Explorer (MAX) for more information.

Additional Information

For NI Switch Executive, the resource descriptor is in the IVI Driver Session on the Hardware tab. Double-click on the Resource Descriptor to change it.  

Note: The Resource Descriptor dropdown menu will only display the VISA resource descriptor; the DAQ/DAQmx resource descriptor will need to be manually entered.
Refer to the "Hardware Asset" section of the Measurement & Automation Explorer Help for valid resource descriptor options. The help can be accessed within Measurement & Automation Explorer (MAX) under Help»MAX Help