Remmina is the RDP (remote desktop software) for Windows server on Linux. Here’s how to install.

sudo add-apt-repository ppa:remmina-ppa-team/remmina-next
sudo apt-get update
sudo apt-get install remmina remmina-plugin-* libfreerdp-plugins-standard

If you don’t see the RDP option, kill the process and restart Remmina.