FIX: VirtualBox VM Session was closed before any attempt to power it on (Solved)

Last updated on November 2nd, 2020

This tutorial contains instructions to fix the following error in VirtualBox: "Failed to open a session for the virtual machine. The VM session session was closed before any attempt to power it on" with Result Code: E_FAIL (0x80004005).

Advertisements

FIX VirtualBox Error "VM Session was closed before any attempt to power it on"

The VirtualBox error "VM Session was closed before any attempt to power it on" usually occurs when the user shuts down the host machine without shutting down the VM guest machine first.

How to FIX VirtualBox Error: "The VM Session was closed before any attempt to power it on".

Method 1. Discard VM's Saved State.
Method 2. Uninstall and Re-Install VirtualBox.

Method 1. Discard VM's Saved State.

The usually method to fix the "VM session session was closed before any attempt to power it on", is to discard the saved state of the Virtual machine. To do that:

1. Right click on the Virtual Machine and select Discard Saved State.

 

Advertisements

Discard Saved State Virtual Machine

2. Then try to start the virtual machine. If the problem persists, continue to the next method below.

 

 

Method 2. Uninstall and Re-Install VirtualBox.

The next method to solve the "VM session session was closed before any attempt to power it on" problem in VirtualBox, is to uninstall and then to reinstall the VirtualBox application, especially if the problem appeared after a Windows Update.

1. Go to Control Panel & Uninstall VirtualBox. (Don't worry, the VMs will stay untouched).
2. Reboot your computer.
3. Download latest version of VirtualBox.
4. Right click on the downloaded file and click "Run As Administrator".
5. Follow the on screen prompts to install VirtualBox.

virtualbox vm fails to start

6. After installation, reboot your computer.
7. Open VirtualBox manager and start your Virtual Machine.
8. If the Virtual Machine opens fine, then proceed to install the Guest Additions and the Extension Pack (if needed).

fix Failed to open a session for the virtual machine - virtualbox

 

That's it! Let me know if this guide has helped you by leaving your comment about your experience. Please like and share this guide to help others.

 

 

 

If this article was useful for you, please consider supporting us by making a donation. Even $1 can a make a huge difference for us in our effort to continue to help others while keeping this site free: