Fatal IO Error:


An error occurred.

What happened?

  • The simulation failed to start due to a fatal IO (Input/Output) error.

What could be the possible reason?

  • The solver has crashed as it could not find a neccessary system file.
  • If you were attempting a ‘CaseUpload’, some files may be missing, have incorrect format or may be broken/corrupt.

What can I do now?

  • If you have encountered this in a simulation that was setup on the SimScale workbench, please report it to ‘Support’ via the ‘contact us’ link below.
  • If you were attempting a ‘CaseUpload’ please make sure all neccessary files are present, have the correct format/type (non zipped) and are not corrupt.


If none of the above suggestions did solve your problem, then please post the issue on our forum or contact us.


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