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 ...

Virtualbox is a great app for using different operating systems on your PC, so here's how to get a fresh virtual machine set up and running.

VirtualBox is great for testing out a new operating system, but your virtual machines probably aren't that special when you first set them up. Here are a few tips for making them much easier to ...

Late on Friday, December 13, Valve released the first public version of SteamOS. As you would expect, SteamOS is currently very rough around the edges -- it is essentially just a version of Debian 7.1 ...

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 ...