Tested under Windows 10 Pro host (1709), Ubuntu server 16 LTS guest, VirtualBox 5.2.4.
Hardware: AMD FX 6300, 8GB Ram (VGA should not matter).
- Download Virtualbox and set up a VM with Ubuntu Server (I used 16 LTS). Take note of the VM name.
- With the VM closed, configure the network adapter as bridged.
- Install the Ubuntu server normally. Take note of your username (duh!).
- Add the plex repositories and add the key as trusted: