Software⏱️ 3 min read📅 2026-06-15

How to Fix: VirtualBox error with Ubuntu virtual machine

VirtualBox error with Ubuntu virtual machine

Quick Answer: Try deleting the entire VirtualBox VMs folder and then try to create a new snapshot.

📋 Table of Contents

  1. 🛑 Root Causes of the Error
  2. ✅ Best Solutions to Fix It
  3. 🎯 Final Words

The error 'Failed to open a session for the virtual machine Ubuntu 12.04 32-bit' affects users who are unable to launch their Ubuntu virtual machines in Oracle VM VirtualBox due to an invalid saved state file.

This issue can be frustrating, especially when relying on virtual machines for coding projects or other tasks. In this guide, we will walk you through the steps to resolve the problem and get your Ubuntu virtual machine up and running again.

🛑 Root Causes of the Error

  • The error occurs due to an invalid saved state file, which can happen when a snapshot is deleted or becomes corrupted.
  • Another possible cause is that the saved state file was not properly deleted, leaving behind a residual file that VirtualBox cannot read.

✅ Best Solutions to Fix It

Delete and recreate the virtual machine

  1. Step 1: Open VirtualBox and select the Ubuntu 12.04 32-bit virtual machine from the list.
  2. Step 2: Click on 'Settings' and then navigate to the 'Storage' settings.
  3. Step 3: Select the hard disk file associated with the virtual machine and click on 'Remove Storage Controller'.
  4. Step 4: Repeat this process for each storage controller.
  5. Step 5: Close VirtualBox and delete the entire folder containing the Ubuntu 12.04 32-bit virtual machine, including any snapshots or other files.
  6. Step 6: Recreate the virtual machine by importing a new hard disk file or creating a new one from scratch.

Delete the corrupted saved state file manually

  1. Step 1: Locate the saved state file that is causing the error, which can be found in the 'C:/Users yler ile path' location.
  2. Step 2: Right-click on the saved state file and select 'Delete'.
  3. Step 3: Verify that the file has been deleted by checking the recycle bin and deleting it from there if necessary.

🎯 Final Words

To resolve the issue, try either deleting and recreating the virtual machine or manually deleting the corrupted saved state file. If you are still experiencing issues, consider seeking further assistance from VirtualBox support or a qualified IT professional.

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