Mass effect 3 coop

• If you're encountering connectivity issues with Mass Effect 3, a good first step is to ensure the proper ports are opened. The UDP Ports that need to be enabled inbound & outbound to play multi-player:
  • UDP Ports: 3659
• Using a restricted connection (such as NAT 3) can cause problems hosting a game. You will be able to create a lobby, but no one will be able to join it via quick match since Match Making will identify you as a “bad host”. However, if you invite your friend directly, you will be able to join without any problem. You should be able to join other games without any problem. 
• More troubleshooting steps for network connections can be found at https://help.ea.com/en/article/losing-connection-to-ea-servers

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