How to Fix the “Failed to Open a Session” Error in VirtualBox

This very short tutorial will explain how to fix the error message “Failed to open a session for the Virtual Machine ” that stops your OS from loading in VirtualBox.

virtualbox error message

  1. Right-click (Mac users hold down the Control button and then click) the Virtual Machine that’s ‘broken’. From the ‘pop-up’ menu select Discard saved state…
  2. When prompted for confirmation click Discard
  3. Now your Virtual Machine’s state will be set to Powered Off, and you can start it as you normally would.
  4. The OS will power up and start as normal.

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