Starting today I've been unable to join my friends parties on Xbox, and no one can connect to me. I've got in touch with Xbox live and followed all the steps to try and resolve the issue, and it has lead me to contact VM. The xbox tech support staff believe it's an issue with VM since my xbox NAT type is open, and nothing else can explain why I'm having trouble. I've noticed other people have had the same problem and VM have resolved it for most people. Can anyone help me with this please?