I did everything. I changed the xbox one s its sound option and back. Ive changed the ingame sound option like turnig voiceover off and on. NO VOICE/DIALOGUE SOUND STILL!!!
!
Ive installed the game completely also so that cant be the problem.
I havent played multiplayer yet. but i always like to do the campaign first
I have the same problem… I can’t hear the voices in the campaign!! Help please
Got the same problem as well.
Dialog during the cgi opening scene work fine. Music, explosions etc work fine. But ingame dialogue during missions and cutscenes dont work. Kinda ruins the experience lol
Dont have this problem with my other games.
Could dis issue be cuz of the disc or wrong update?
Mayday help us 
Where’s the fix on this.
Problem solved pals!!!
If anyone with the same problem is wondering how to fix it: