Network Error with the Connection Manager

SOLVED

I have stopped and started the Connection Manager on my computer and also on the server, multiple times. Nevertheless, I still keep getting this error message when launching any given client Sage 50 file, "A network error occurred while communicating with the Connection Manager. Please wait a moment and try again."

What do I need to do to remedy this problem, permanently? i.e. to not have to keep stopping-starting the Connection Manager.

Network error message.

Thanks in advance,

Kristine