VirtualBox Error VERR_NOT_FOUND: Unable to Open Guest Session
Key Notes
- Ensure VBoxGuestAdditions.iso is present on the host system.
- Insert the Guest Additions CD image properly.
- Upgrade Guest Additions for optimal functioning.
Resolving the Common VERR_NOT_FOUND Error in VirtualBox Guest Additions
Are you struggling with the VERR_NOT_FOUND error while attempting to upgrade Guest Additions on your VirtualBox virtual machine? This guide will provide you with effective solutions to troubleshoot and fix this issue, allowing you seamless operation of your guest sessions.
Resolving the VERR_NOT_FOUND Error in VirtualBox
Step 1: Verify the Presence of the VBoxGuestAdditions.iso File
The VBoxGuestAdditions.iso file is essential for enhancing communication between your guest system and the host. To ensure it exists:
- Navigate to the location:
C:\Program Files\Oracle\VirtualBox
on your host machine. - Confirm that the VBoxGuestAdditions.iso file is available in the folder.
- If it’s missing, uninstall VirtualBox, download it again, and ensure that the Guest Additions are installed properly.
Pro Tip: If after checking, the file exists but you still encounter issues, consider reinstalling VirtualBox to refresh all components.
Step 2: Insert Guest Additions CD Image
If the error persists, you may need to insert the Guest Additions CD image into your VM:
- Start your Virtual Machine.
- Access the menu bar, click on Devices, and from the dropdown select Insert Guest Additions CD Image.
- Open the CD Drive window that appears and navigate to the VirtualBox Guest Additions folder.
- Double-click VBoxWindowsAdditions.exe to run the installer.
- Follow the prompts to complete the installation and then restart your VM.
Pro Tip: Ensure your VM has internet access during the installation process for any required updates.
Step 3: Upgrade Guest Additions
Once Guest Additions are installed, an upgrade may enhance performance:
- In Oracle VM VirtualBox, navigate to the Devices menu and click on Upgrade Guest Additions.
- Wait a few moments for the upgrade process to complete.
- Check whether the VERR_NOT_FOUND error persists after upgrading.
Pro Tip: Always back up your VM before performing upgrades to ensure your data remains secure.
Step 4: Install VirtualBox Extension Pack
To resolve issues related to the VERR_NOT_FOUND error, installing the VirtualBox Extension Pack might be necessary:
- Go to virtualbox.org.
- Scroll to find the VirtualBox Extension Pack for your version of VirtualBox.
- Click on the download link to add the necessary extensions for enhanced functionalities.
Pro Tip: Ensure that the Extension Pack version matches your VirtualBox version to avoid compatibility issues.
Additional Tips
- Always verify that you’re using the latest version of VirtualBox for bug fixes and improvements.
- Consider checking VirtualBox forums for additional community-driven solutions.
- Enabling shared clipboard and drag-and-drop features can enhance VM usability.
Summary
This guide provided you with actionable steps to troubleshoot the VERR_NOT_FOUND error while upgrading Guest Additions on VirtualBox. By following these steps, you can successfully restore access to your guest sessions and optimize your VM’s performance.
Conclusion
Resolving the VERR_NOT_FOUND error can streamline your experience with VirtualBox. By following the strategies discussed here, including verifying essential files and updating your installations, you can ensure your virtual machines operate smoothly. Don’t hesitate to engage with VirtualBox communities for further support if you run into issues.
FAQ (Frequently Asked Questions)
How do I create a guest session in VirtualBox?
To create a guest session, use the Guest Control File Manager from Guest Additions. This feature supports file transfers between systems, allowing easy management tasks such as creating folders and deleting files. You must provide authentication credentials for the guest system user to create a session.
How do I fix VirtualBox COM error?
To resolve a COM error, run VirtualBox with administrator privileges. If the error persists, consult specific troubleshooting guides to address the underlying causes.
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