If you cannot open the guest session and get a VERR_NOT_FOUND VirtualBox error, follow the tips, solutions, and workarounds mentioned below. Check if “VBoxGuestAdditions.iso”n exists Insert Guest ...
It is the first thing you need to fix the issue as stated above. For that, you need to run the virtual machine showing the error and go to the Devices > Install Guest ...
When you start VirtualBox, you should see a screen like this. You don’t need to change anything yet; just click the “New” button in the top left corner. Now you need to tell VirtualBox what kind of OS ...
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