Unable to start Glassfish server

In case you are not able to start the Glassfish server from netbeans, please try the below options.

1. Find out which process is using the port and then kill the other process from task manager.

netstat -aon | find ":80" | find "LISTENING" -> this should help you locate the process id.

    2. Go to Glassfish server administration page and stop Glassfish server.

         localhost:4949 (Glassfish server administration page) click on 'server (Admin Server)' in the left pane,            then press the 'Stop' button.