Guide: If your camera isn’t working in Microsoft Teams on macOS, and terminal commands (like permissions fixes) return errors such as kill:9 , follow these steps to diagnose and resolve the issue. Step 1: Confirm Camera Functionality Test the Camera in Other Apps Open FaceTime or Photo Booth to ensure the camera works system-wide. If it doesn’t work , there’s a macOS-level issue (e.g., hardware/driver problem). If it works , the problem is specific to Teams. Step 2: Check macOS Permissions Grant Camera Access to Teams Go to System Preferences > Security & Privacy > Privacy Tab > Camera . Ensure Microsoft Teams is checked. If Teams isn’t listed, proceed to Step 3. Step 3: Reset Teams Permissions Trigger a Permission Request Quit Teams completely (right-click the Teams icon in the Dock > Quit ). Open Terminal and force-reset permissions: bash Copy tccutil reset Camera com.microsoft.teams Relaunch Teams. It should now prompt for camera access. Click Allow . Step 4: Fix ...