To resolve this issue, you must uninstall Hyper-V. To do this, close the virtual machine and exit VirtualBox. Then open the Control Panel and, in Icon View, go to “Programs and Features” → “Turn ...

We have observed that when attempting to run a VirtualBox image in Oracle VirtualBox, an error appears stating that VirtualBox is not signed with a build certificate ...

If you find that the Virtual Media Manager is missing when working with Oracle VM VirtualBox, execute the solutions mentioned below. If you see the Media option there, your issue is resolved, as that ...