When trying to install agents remotely using the perfrsmanager command line tool, the installation might fail on machines where earlier versions of the agent-only software already exist. In this case the command line tool will return the error: “PerfOrb: 23 - The connection could not be established”.
 
 
To resolve this issue it is necessary to install hotfix 'SP79_Hotfix19_RemoteSetup' onto the Silk Performer controller machine before running the perfrsmanager command line tool.