Open Settings > Privacy & security > Camera . Ensure Camera access is toggled On .
Sometimes Windows "loses" the camera hardware due to a driver glitch. You can force Windows to re-detect it. How To Fix Webcam Not Working In Zoom Meeting
When Zoom fails to detect your camera on Windows 11, it's typically due to restrictive privacy settings, driver conflicts, or another app "monopolizing" the device . 1. Check Hardware & Physical Blockers