Posting this more for my benefit, but also just to provide one more search result for this issue.
Today while working on one of my Test VMs via Remote Desktop and application stopped responding. No problem…simple solution, hit Ctrl + Alt + Del. The difficulty is that those keys trigger my local machine, not the VM through Remote Desktop. I needed to figure out how to send that command to my VM.
Google it. Seriously, it only took me thirty second on Google to find the solution.
To send the Ctrl + Alt + Del command to another machine via Remote Desktop you use the following key combination:
Ctrl + Alt + End
That’s it. Problem solved. Brought up Task Manager, killed the application and now I can get on with my life.