Error -1074130544: The Session Handle Is Not Valid with NI Device/IVI Driver

Issue Details

• I am trying to create a LabVIEW application for my switch hardware using NI-SWITCH I get Error -1074130544.
• When I try to execute my LabVIEW code that is controlling hardware or instruments, I get Error -1074130544. I am able to communicate with the instruments in NI MAX but the program still throws this error. How do I resolve this?
• I am trying to change the calibration password from my device per the calibration procedure but I get Error -1074130544.
• I have a third-party instrument connected via USB. I installed the USB driver, the IVI, and LabVIEW drivers. However, I don't know which channel name to use. When I execute any of the example VIs that came with the driver, I receive Error -1074130544: "The session handle is not valid."

Error -1074130544 ocurred at <Driver & VI>
Possible reason(s):
IVI: (Hex 0XBFFA1190) The session handle is not valid.

Solution

• If you are using specifically an IVI Driver, the channel name in LabVIEW is incorrect, verify the channel's name.

• Ensure that the initialize VI for your device is called before any other functions are called.
  • For example: An NI-SWITCH session is established with the niSwitch Initialize With Topology VI , the niSwitch Initialize With Options VI, or the niSwitch Initialize VI. 
• Ensure that there is a VI called that closes the communications to the device using the close VI.
• Ensure that multiple Initialize VI's have not been called for the same device.
• Make a new VI having only one initialize and once close VI wired to each other and run it. Check if the error still persists by wiring the appropriate error indicator.
• Try a Reset of the NI-MAX Database. 
• If any of the steps above resolve this issue, a reinstallation of the NI drivers related to the instruments that are showing this error could be required. For example, NI-VISA, NI-Serial, NI-488.2, or any other driver related to the hardware in use. 
• When changing the calibration password or user defined informaton you need to open a calibration session using the open external calibration VIs in order to get a valid calibratioin handle.