You have ControlUp version 4.1 but receive the following error when trying to connect to an end point - "An error occurred while trying to start remote service."
.Net framework 4.6.1 was deployed on that end point.
Currently .net framework 4.6.1 is supported only by ControlUp's version 5 and up.
In order to fix the issue, please upgrade to ControlUp version 5 or later releases.
ControlUp's latest release can be found here.