I've followed many online tutorials on how to install pgAdmin correctly, I've installed and uninstalled it multiple times but whenever install it. It shows Server Groups without any servers in it.
Then when I try and register a new server using localhost for both name and host I get this error:
server doesn't listen
Searched for days trying to find a solution for this, any ideas?
happened with me as well, when I started pgadmin3 for the first time, i was expecting it to ask for the password which I provided during but it didnt ask and then didnt display any servers.
anyways, you can create a server yourself,
if your server is on the same machine,
provide a name: test
provide server: localhost
port: 5432 (default port)
user: postgres (default user) you can change later in login roles
password: provide something
restart if required and it will then show you
database with postgres (default db),
tablespace,
login roles
under your server and you should be good to go
Reinstalled program and saved it to directory C:\ instead of C:\program_Files
来源：https://stackoverflow.com/questions/29494384/pgadmin-iii-no-servers-showing-up