Error -1950679023 Occurs from Time to Time for an Application Using CompactRIO

Updated May 3, 2018

Reported In


  • CompactRIO Chassis


  • LabVIEW

Issue Details

I have a cRIO application in the field that had been running continuously for months without any problems. However, last week I got the error -1950679023, causing the application to stop. Afterwards the application started again without any problem. This happens from time to time and the error message usually disappears after 35-40 seconds.  


The error - 1950679023 is due to the system that is hosting your shared variable being unable to find the shared variables. This could be caused by:
  • A bad connection between the PC and the cRIO device
  • A dip in the power supply of the installation
  • The Shared Variable Engine (SVE) is crashing momentarily
If you are using a LabVIEW Real-Time target such as CompactRIO or Compact FieldPoint, you should consider hosting the shared variable library on the real-time target. These devices have watchdog capabilities and typically contain hardware components controlling the critical pieces of an application, whereas most Windows or PC-based targets do not have these fail-safes.

You can host the shared variable library on the real-time target by following the steps here


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