o.netty.channel.abstractchannel$annotatedconnectexception connection refused no further information 

This is the message that I get Everytime I try to connect to  a server.I have reinstalled minecraft three times and I have repaired the files from the minecraft installer.I have also let all java apps through my firewall and I have changed my internet access from an ethernet cable to another wifi connector that I have.

Mojang please help me.