This is one of the major problem which is existing with the current version of kali linux. The Gnome desktop is always conflicting with the xrdp service. So gnome desktop was removed and used lxde instead. In this video tutorial you will be able to find how to do it in very simple steps. Its not that complicated as well. This video session is created specially for newbies in kali linux who want to set up a remote desktop to any other computer using xrdp, which is not possible with the package coming with the latest download of kali linux. All you have to do it watch this and just follow the steps.
[embedyt] https://www.youtube.com/watch?v=cWQsLVAVCN4[/embedyt]