Xbox360 i cant join partys on xbox360

While on a call, press conference or transfer button(will put first call on temporary hold). Make call to next party, talk to party, press conference button to join all callers. Same procedure to add more parties up to 8 total.

Also, if you use transfer button to start conference call you can use transfer button to join all parties.
If you use conference button to start conference call use conference button to join all parties.

The problem is that your connections just dont agree with eachother. If either of you are using a router, try connecting straight to the modem.

make sure you have your router setup correctly. and sometimes it helps to have a static ip address. you can find more info at xbox.com

You should still be able to play online with people, as the party privacy only effects parties that YOU make. If you join a playlist, you should be able to join in on the fun :)

Lemme know if you need any more help
BB

The problem is your internet is not good enough to host or join their game. There is probably some type of connection problem or their game is full. Hope this helps.

This happens occasionally with me too, I reset my router and it works fine. Sometimes it takes a couple of times for it to work.

tell ur friend to click ur gamertag then join session in progress.

Send a mail to the wbsite owners. It may be the site has problems.

contact ur router company do u have a linsky router ?

This problem is not uncommon, it is that your NATs are different, you can configure your internet settings, to do this, just look up on google how to configure your NAT.