Resolved: VirtualBox Cannot register the DVD image

Consider a situation where due to a storage problem, you upgrade your virtual Windows 10 system to Windows 11 and subsequently relocate them to another disc. In this situation, Windows 11 won’t start when you try to run it on a virtual machine. The whole error message is displayed in the image below and reads, “Cannot register the DVD image ‘VBoxGuestAdditions.iso.

The reason for this error to appear is that when moving virtual machine files from one drive to another or from one system to another, you could see this problem. The error notice “Failed to open virtual machine” will appear and you won’t be able to access your previously installed Windows. The message “Cannot register the DVD Image ‘VBoxGuestAdditions.iso’ because a CD/DVD image ‘VBoxGuestAdditions.iso’ with UUID….. already exists” will be displayed along with other error information.

If you have important data saved on a virtual machine, it might be quite annoying. Did you lose all data by just moving your Windows virtual machine’s files to a new drive? It’s not true, no. You can still use virtual Windows and your data is still secure. You don’t have to reinstall Windows on a virtual machine.

If this is the case with your computer too and you don’t know how to solve it this risewindows article is here to help.

“Cannot register the ‘VBoxGuestAdditions.iso’ DVD image in VirtualBox,” How do I fix it?

Step 1: Open Windows Explorer by pressing Windows + E, then find the location of the.vbox file for the VirtualBox machine.

Note: The error notice at the top will show you where the.vbox file is. It is “F:VirtualBox VMsWindows 10Windows 10.vbox” in this case.

Step 2: From the context menu, choose Notepad when you right-click on the.vbox file.

Step 3: Choose and remove the lines that read “DVDImages” through “/DVDImages.” (Please see the image below.)

Step 4: After finishing, save the Notepad file and exit the program.

Step 5: At this point, launch the virtual machine.

The error “Cannot register the DVD image ‘VBoxGuestAdditions.iso” will be fixed once you are done with all the above mentioned steps.

That is it.

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