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 ...

A Russian security researcher has published details about a zero-day vulnerability affecting VirtualBox, an Oracle software application for running virtual machines. According to a text file uploaded ...

I run this XServe headless. I also have VirtualBox on it. To start a VM via ssh I need to first use VNC and login to the account that has permissions for VB. Then either via the Terminal application ...

There are many reasons for the virtual machines not starting such as Microsoft Hyper-V interfering with the AMD-V technology or AMD-V being disabled in the BIOS settings. If AMD-V is disabled in the ...