Unable to Start CFD or Meshing Jobs — Repeated Unexpected Errors

Hello,

I am experiencing repeated job-launch failures in my academic SimScale project,

An earlier conjugate heat transfer simulation completed successfully using a conformal multi-region mesh containing approximately 3.26 million cells.

I subsequently duplicated the simulation to correct a heat-flux boundary-condition face assignment. However, the new simulation repeatedly failed to create or start a computational job.

I attempted to generate a new mesh using the same settings, but the meshing job also failed to start.

To isolate the issue, I created another simulation directly from the previously successful configuration. This simulation also failed to launch.

The reported error codes are:

  • WvuOn36M — Initial run-creation failure

  • c0DizYF9 —initial run creation/job-start failure

  • 3F9CPZVm — initial run mesh-generation failure

  • YYj052GU — duplicate run (replaced assigned face)-creation/job-start failure

All errors display a generic unexpected-error message without identifying the underlying cause.

Could these failures be related to my project configuration (I only reassigned one face), mesh references, or SimScale’s job scheduler?

Thank you …