I am trying to install InDesign server CC 2015 trail version by using command prompt it throws an error "Adobe InDesign Server is not properly licensed and will now quit".How to resolve this error ?
You need to activate the trial. It's not just about installing the app. As the app has no interface it needs to know if you have a valid licence or if you want to try it for a while.
This one is in french but you may find the english version easily.