Software⏱️ 3 min read📅 2026-06-11

How to Fix: I have a very weird Virtualbox error and I don't know what it means

Virtualbox error fix for Mac OS Sierra in scaled mode.

Quick Answer: Check Virtualbox settings and ensure the VM is set to use a compatible graphics driver.

📋 Table of Contents

  1. ⚠️ Common Causes
  2. 🔧 Proven Troubleshooting Steps
  3. 💡 Conclusion

The error 'Failed to open a session for the virtual machine Mac Os Sierra.' and 'Failed to get a console object from the direct session (RPC_E_DISCONNECTED).' occurs when you're running OS X in a VM on Virtualbox, specifically when scaling the screen. This issue doesn't seem to affect performance, but it can be frustrating as it prevents you from using your virtual machine.

This error is particularly annoying because it's intermittent and unpredictable. Sometimes, your virtual machine will work fine, while other times, you'll get this error message out of the blue. Don't worry; we're here to help you troubleshoot and find a solution.

⚠️ Common Causes

  • The primary reason for this error is that Virtualbox is having trouble establishing a connection between the host machine and the virtual machine. This can be due to various reasons, including outdated or incompatible drivers, network issues, or even a problem with the Virtualbox software itself.
  • Another possible cause is that the virtual machine's display settings are not configured correctly. In particular, if you're using scaled mode on an older laptop like yours (1366x768), it might be causing some compatibility issues.

🔧 Proven Troubleshooting Steps

Update Virtualbox Drivers and Configure Display Settings

  1. Step 1: Step 1: Update your Virtualbox drivers to the latest version. You can do this by downloading the latest driver from the official Virtualbox website or through your system's package manager.
  2. Step 2: Step 2: Ensure that your virtual machine's display settings are configured correctly. Go to Settings > Display and select 'Auto' for both the resolution and refresh rate.
  3. Step 3: Step 3: If you're using scaled mode, try setting the resolution to the native resolution of your laptop (1366x768). This might help resolve any compatibility issues.

Disable Scaled Mode and Use Native Resolution

  1. Step 1: Step 1: Disable scaled mode on your virtual machine. Go to Settings > Display and select 'Native' for the resolution.
  2. Step 2: Step 2: Set the resolution of your virtual machine to match the native resolution of your laptop (1366x768). This should help resolve any compatibility issues.

💡 Conclusion

If you've tried both methods above, you should now be able to run your OS X virtual machine without encountering this error. If the issue persists, feel free to provide more details about your setup and we'll do our best to troubleshoot further.

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