For all our clients who runs on Mac , if you havent installed or have remote desktop client
Please check this youtuble tutorial video below
Please make sure you are running the latest RDP for mac by microsoft, since they released a newer version just for Windows 2012 R2
You can download it from the link below
https://itunes.apple.com/us/app/id715768417?mt=12
Please note that Osx version 10.9.5+ has a remote desktop bug that havent been fixed yet by Apple
https://www.youtube.com/watch?v=x7TCvLuWlF0
And of course you are welcome to submit a ticket anytime if that didnt fix it, we would be pleased to help you anytime