Gist is related to https://hochwald.net/post/resolving-audio-issues-microsoft-teams-macos/

FixMSTeamsAudioIssues.sh

#!/usr/bin/env bash
#set -x # Enable debugging
#set -euo pipefail # Strict error handling
IFS=$'\n\t' # Set IFS to handle spaces in filenames correctly

# Script to clear Microsoft Teams cache and restart the application on macOS
# The MSTeamsAudioDevice driver is removed to fix audio issues in Microsoft Teams

# Just in case!
if [ "$(uname -s)" != "Darwin" ]; then
	error "This script runs only on macOS systems."
	exit 2
fi

TEAMS_APP_NAME="Microsoft Teams"

# Close Microsoft Teams if it's running
if pgrep -f "$TEAMS_APP_NAME" >/dev/null 2>&1; then
	osascript -e "tell application \"${TEAMS_APP_NAME}\" to quit" >/dev/null 2>&1 || true
	sleep 2
fi

# Kill all for the Microsoft Teams processes to ensure complete closure
if pgrep -f "$TEAMS_APP_NAME" >/dev/null 2>&1; then
	echo "Forcing kill for $TEAMS_APP_NAME"
	pkill -f "$TEAMS_APP_NAME" >/dev/null 2>&1 || true
	sleep 1
fi

# Define directories to clear
declare -a PATHS_TO_HANDLE=(
	"$HOME/Library/Containers/com.microsoft.teams2/Data/Library/Application\ Support/Microsoft/MSTeams/"
	"$HOME/Library/Group\ Containers/UBF8T346G9.com.microsoft.teams/"
	"$HOME/Library/Containers/com.microsoft.teams2/com.microsoft.teams2.notificationcenter/"
	"$HOME/Library/Containers/com.microsoft.teams2/com.microsoft.teams2.respawn/"
	"$HOME/Library/Containers/com.microsoft.teams2/com.microsoft.teams2.widgetextension/"
	"$HOME/Library/Containers/com.microsoft.teams2/Data/Library/Caches/com.microsoft.teams2/"
)

# Do the clearing
for TARGET_PATH in "${PATHS_TO_HANDLE[@]}"; do
	if [ -d "$TARGET_PATH" ]; then
		echo "Clearing contents of: $TARGET_PATH"
		rm -rfv "${TARGET_PATH:?}/"* || echo "Failed to clear contents of: $TARGET_PATH"
	else
		echo "Directory does not exist, skipping: $TARGET_PATH"
	fi
done

# Remove the MSTeamsAudioDevice.driver if it exists
if [ -d "/Library/Audio/Plug-Ins/HAL/MSTeamsAudioDevice.driver" ]; then
	sudo rm -rfv "/Library/Audio/Plug-Ins/HAL/MSTeamsAudioDevice.driver" || echo "Failed to remove driver"

	# Kill all for the Coreaudio process to reset audio services (twice for reliability)
	if pgrep -f "$pattern" >/dev/null 2>&1; then
		echo "Forcing kill for pattern: $pattern"
		sudo pkill -f "$pattern" || true
	fi
	sleep 1
	if pgrep -f "$pattern" >/dev/null 2>&1; then
		iechonfo "Forcing kill for pattern: $pattern"
		sudo pkill -f "$pattern" || true
	fi

	sleep 1

	if sudo launchctl kickstart -k system/com.apple.audio.coreaudiod >/dev/null 2>&1; then
		echo "Used launchctl kickstart to restart coreaudiod"
	else
		echo "launchctl method failed, falling back to killall"
		sudo killall coreaudiod || true
	fi

	sleep 2

	if pgrep -x coreaudiod >/dev/null 2>&1; then
		echo "coreaudiod running again after restart"
	else
		echo "coreaudiod not running after restart attempt"
	fi
fi

# Restart Microsoft Teams (Take longer time to launch due to cache clearing)
open -a "$TEAMS_APP_NAME" >/dev/null 2>&1 || warn "Failed to open $TEAMS_APP_NAME with open -a"
sleep 5

# Verify if Teams is running
if pgrep -f "$TEAMS_APP_NAME" >/dev/null 2>&1; then
	echo "$TEAMS_APP_NAME is running. If audio issues persist, reboot or re-login may be required."
else
	echo "Failed to start $TEAMS_APP_NAME."
fi