VirtualBox Guest Additions improve the performance and user experience, including features such as Drag & Drop and Shared Clipboard. You can install VirtualBox guest additions by inserting the ISO image located in the VirtualBox installation folder by default, or you can install Guest Additions from online Linux repositories by using your Linux package manager. Manual installation is required for v.2019.2 and older. Kali v2019.3 and newer detect that Linux is installed inside a VM, and Guest additions are usually installed automatically.