The latest Realtek HD Audio drivers (post-2023) have broken voice activation in many DirectX 9/11 games.
Sometimes, Battlefield 4's settings reset themselves after an update or if you unplug your hardware while the game is running. Navigate to > Audio . Ensure VOIP is toggled to ON . Check that the VOIP Volume slider is not at 0%. Battlefield 4 Voip Not Working
Before you dive into complex solutions, run through this 60-second checklist: The latest Realtek HD Audio drivers (post-2023) have
Sometimes, your setup is perfect, but the server is the problem. run through this 60-second checklist: Sometimes
: Windows Settings → Privacy & Security → Microphone → Allow apps to access your microphone → ON