Hi,
I found an old thread about this, but it only contained people complaining of the same issue, no real answers. Just began playing this the other day and haven’t actually wanted to join parties just yet, but trying to figure it out anyway. My specific error code was 10:1008:8007:1085:101 just a few minutes ago, although yesterday it was slightly different. I have adjusted router settings, forwarded ports, turned off firewalls, running windows 7. Has there been any other information regarding this issue? Thanks to anyone able to help.