I am trying to add a simulated NI PXI-9072 DMM to NI MAX. After it is added I see this error and no other operations work (see screen snip below) Status Code: -201166Firmware for this device is corrupt. Contact National Instruments for help with this device. It works fine for PXI DAQ devices and scopes. How can firmware be corrupt for a simulated device??? Anyone know how to fix this error? I have repaired NI-DMM but no joy. NI-MAX 21.0 NI-DMM 19.5

The error code you are getting is produced when the PXI-4072 driver attempts to load the main firmware image from disk onto the device (these DMMs have an onboard DSP whose firmware is shipped with and loaded by the driver). It might be confusing to you that this happens in simulation, but we actually run as much of the real driver code in simulation in order to get a behavior as similar as reasonable to the driver running on the real hardware. The error is returned if: the file cannot be opened (probably because it's missing) the file is corrupt the file's version is unexpected It must be an issue with your installation, either because someone tampered with files they shouldn't have or due to a bug in the installer. The file that the driver looks for is "PXI4072acq_code.cfg" and is somewhere under "C:\Program Files (x86)\National Instruments" (I don't have a system readily available to check). You can compare with one of the other systems. Repairing or reinstalling the driver should fix it. Please see if the file is missing or what, and report back. Thanks!

Digital Multimeters (DMMs) and Precision DC Sources

Adding simulated DMM to NI MAX gives "Status Code: -201166 Firmware for this device is corrupt. "

Solved!

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That does it! I found the file in D:\Program Files (x86)\National Instruments\NI-DAQ\sharcfiles\ni4070 . A bit of history: at one time I was installing NI software on my D drive because C was getting a bit full. This is now resolved (thanks to Samsung!) so I reverted the registry change I did to make it install on the D drive. Unfortunately, this seems to have confused the MAX software as it seems to be expecting the file to be on the C drive. I guess repairing or re-installing DAQmx would fix it but for now I have just copied the sharcfiles folder to C:\Program Files (x86)\National Instruments\NI-DAQ (this folder does exist but was missing the sharcfiles sub-folder).

Kudos to Marcos Kirsch 👍