Connect to your instance either through SSH option or use gcloud option. Once connected update the source list.
sudo apt-get update && sudo apt-get upgrade
Then we need to install the Gnome components for our virtual desktop. So type the following command:
choose only one from these 2
- Full Desktop environment
sudo apt-get install ubuntu-desktop
- Lightweight with core functionality
sudo apt-get install gnome-core
open in browser
https://remotedesktop.google.com/headless
paste these on console
wget https://dl.google.com/linux/direct/chrome-remote-desktop_current_amd64.deb
sudo dpkg -i chrome-remote-desktop_current_amd64.deb
rm -rf chrome-remote-desktop_current_amd64.deb
sudo apt update && sudo apt upgrade