So Ive had a server since 1.7.10 and its never gone wrong. I updated it to 1.8 and it was fine. But soon after I updated it to 1.9, it stopped working. I did some investigation and this is what I found: Port 25565 is forwarded correctly. Port 25565 TCP & UDP are open when server is off Port 25565 UDP is open when server is on Port 25565 TCP is closed when server is on. I have also allowed them to my firewall and tried the server with different ports. They all do the same thing. TCP closes when server is online. Here is my config: ip_forward: false network_compression_threshold: 256 stats: 93143fa5-1b30-4cb0-841c-84bf66677160 permissions: default: - bungeecord.command.server - bungeecord.command.list admin: - bungeecord.command.alert - bungeecord.command.end - bungeecord.command.ip - bungeecord.command.reload groups: md_5: - admin servers: Hub: motd: '' address: localhost:25566 restricted: false SkyPvP: motd: '' address: localhost:25572 restricted: false SkyBlock: motd: '' address: localhost:25571 restricted: false ClanPvP: motd: '' address: localhost:25570 restricted: false FunMaps: motd: '' address: localhost:25568 restricted: false RecordingServer: motd: '' address: localhost:25573 restricted: false timeout: 30000 listeners: - query_port: 25565 motd: '&8&l&k||||&r&7&lGlimattack&8&l&k||||' tab_list: GLOBAL_PING query_enabled: false forced_hosts: pvp.md-5.net: pvp ping_passthrough: false bind_local_address: true host: 0.0.0.0:25565 max_players: 100000 tab_size: 20 force_default_server: false priorities: - Hub player_limit: -1 online_mode: true log_commands: false disabled_commands: - disabledcommandhere connection_throttle: 4000 Please help.