Friday, February 07, 2020

Fix: "OS Error 4294956486" launching Children of Morta on Mac/Steam

Early this morning, I tried to launch the game Children of Morta on Steam running on my Mac. The game failed to open, and Steam displayed the error "OS Error 4294956486".


Deleting the game via the Steam (via Library → Right-click on Children of Morta in the list → Manage → Uninstall), and then redownloading and reinstalling Children of Morta, fixed the problem for me, and I was able to get a little gaming in before my work day.

Other solutions attempted that didn't work for me

  • Restarting Steam.
  • Restarting my Mac.
  • Launching the game manually via the command line.
  • Doing a "Verify Integrity of Game Files" (via Library > Right-click on Children of Morta → Properties → Local Files tab → "Verify Integrity of Game Files" button).

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