There are reported cases where VirtualBox can cause your network config in the VM to become invalid and throw the error message Failed to open/create the internal ...
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 ...
Stephen Glasskeys Finally if you are still unable to start the VM, use the Machine menu’s Show Log feature to view a detailed log of the machine boot process. Another resource that may be of help is ...