One of the more common suggestions from readers following the article on my personal must-have apps for Ubuntu last week was that I install some sort of virtual machine on my computer and test ...

Microsoft released a developer preview of Windows 8 last night and surprisingly made it available for general public too. Though this brand new OS is half-baked and is meant to be used by developers ...

October 22, 2014 Add as a preferred source on Google Add as a preferred source on Google VirtualBox is a lifesaver for anyone who wants to tinker and experiment with different operating systems. Using ...

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 ...