Notes on the procedure for installing VirtualBox Guest Additions on Kali Linux in VirtualBox. Execute the following commands.
## Fix Unable to Locate Package Update in Kali Linux
## ref: [How to Fix Unable to Locate Package Update in Kali Linux Correctly](https://www.technig.com/unable-locate-package-update/)
cat << EOT > /etc/apt/sources.list
deb http://http.kali.org/kali kali-rolling main contrib non-free
deb http://old.kali.org/kali sana main non-free contrib
deb http://old.kali.org/kali moto main non-free contrib
EOT
apt-get clean
apt-get update
## install VirtualBox Guest Additions in Kali Linux
## ref:[How to install VirtualBox Guest Additions in Kali Linux (Kali Rolling / Kali Linux 2016.2 / Kali 2017) - blackMORE Ops](https://www.blackmoreops.com/2017/01/24/install-virtualbox-guest-additions-in-kali-linux/)
apt update & apt -y dist-upgrade
reboot
apt -y install virtualbox-guest-x11
reboot