Fortnite Voice Chat Not Working
Can’t hear or speak to teammates with voice chat : FORTnITE
Fortnite Voice Chat Not Working [FIXED]
Can't speak in Fortnite voice chat and can't hear people in Fortnite voice chat
To do this go to the Twitch app, move down to the audio sources and un-mute Party Chat.
If you use any fancy mic effects through OBS or similar applications, it could be that.