One or more services required by the Management Server to remotely install the agent are not running.
To remotely install an agent, the following services are required to be started on the target computer:
Display Name
Windows Service Name
Windows Management Instrumentation
WinMgmt
Remote Procedure Call (RPC)
RpcCs
Remote Registry
RemoteRegistry
Windows Installer
MSIServer
If any of the above are not running or their Start Type is set to Disabled, start them up and run the Discovery Wizard again.