This content is not available in your preferred language.

The content is shown in another available language. Your browser may include features that can help translate the text.

Error -1073807346: Error Occurred at VISA Open and NI-RIO Open: Given Session or Object Reference is Invalid

Updated Jan 8, 2019

Reported In


  • PXI-7831


  • LabVIEW FPGA Module
  • LabVIEW


  • NI R Series Multifunction RIO
  • NI CompactRIO

Issue Details

I have compiled FPGA code, and I am trying to interface with it from my host. When I use the Open FPGA Reference and Invoke Nodes on my host VI, I get the following error:

How can I fix this error and run my FPGA code?


To resolve this, you need to configure a resource for your FPGA device. Follow these steps to resolve the error:

1. Go to the Project Explorer window and right-click on your FPGA device. Select Properties.
3. In the resource field, type in RIO::INSTR.
3. Click OK.

You should now be able to run your FPGA VI without any errors.


Not Helpful