I got back on MCC today and have been loving it. After playing a few hours my voice chat just suddenly stopped working. Before then it was working just fine. I hope it's not from me quitting games. Unfortunately I live in college dorms so my internet connection here will just go out for a few seconds and kick me out of the games. Please let me know what the reason is for my mic not working in voice chat.
It could be a problem related to: your headset, your connection, your controller, xbox live.
I don’t think it is something about mcc, you should try to use your mic on xbox live groups or other games: if it is a problem that occurs only on mcc, try check the settings