From the man page, xrdp is a remote desktop protocol (RDP) server. Unlike Windows, xrdp will not display a Windows desktop but an X window desktop to the user. To install on a CentOS 7 Linux box with a GUI installed, turns out to be quite simple.
A prerequisite will be the EPEL repository.
yum install http://dl.fedoraproject.org/pub/epel/7/x86_64/e/epel-release-7-5.noarch.rpm
Now that EPEL is ready, install and configure xrdp.
yum install xrdp tigervnc-server
systemctl start xrdp.service firewall-cmd --permanent --zone=public --add-port=3389/tcp firewall-cmd --reload chcon --type=bin_t /usr/sbin/xrdp chcon --type=bin_t /usr/sbin/xrdp-sesman systemctl enable xrdp.service
From your Windows box, you may use Remote Desktop Connection ("RDP") to connect to your Linux box. Make a change to the Colors located under the Display tab. Change it from the likely default of Highest Quality (32 bit) color to something else. For this exercise, the True Color (24 bit) worked.
If the change was not made, then a Connection Log box will appear that in part reads VNC error - only supporting 8, 15, 16 and 24 bpp rdp connections. Press OK. Make the change. Repeat the RDP connection.
Type in your credentials and all should be good to go.