Last updated 28 August 2026
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Start by proving the camera works
Run the webcam test before changing any Zoom settings. This takes ten seconds and splits the problem in half:
- Camera works in the browser — hardware, cable and driver are all fine. The fault is in Zoom. Continue below.
- Camera fails in the browser too — this is a system-level problem, not a Zoom one. See camera not working on Windows 11.
1. Zoom has the wrong camera selected
Open Zoom, click the gear icon, and choose Video. The preview at the top shows what Zoom is currently capturing.
Use the camera dropdown to try each entry. Watch out for virtual cameras: entries named "OBS Virtual Camera", "Snap Camera", "NVIDIA Broadcast" or similar produce a black image when their parent application is not running. On a laptop with an external webcam plugged in, both appear, and Zoom does not always pick the one you expect.
2. Another application is holding the camera
Most webcams serve one application at a time. Microsoft Teams is the usual offender because it keeps running in the system tray after its window is closed.
Close Teams, Discord, Skype, OBS and any browser tab with a call open, then restart Zoom completely. On Windows, check the system tray and end the processes in Task Manager if necessary.
3. The operating system is blocking Zoom specifically
Permissions are granted per application. Allowing your browser to use the camera says nothing about Zoom. Each app is listed and toggled separately.
macOS
Open System Settings, Privacy & Security, Camera and make sure zoom.us is ticked. macOS requires a full restart of the application afterwards, so quit Zoom with Command-Q rather than closing the window, then reopen it.
Windows
Open Settings, Privacy & security, Camera. Enable Camera access, then Let apps access your camera, then scroll to the bottom and enable Let desktop apps access your camera. Zoom is a desktop app, so that final switch is the one that matters.
4. Video is switched off in the meeting
Obvious, but it catches everyone eventually. Check the camera icon in the meeting toolbar for a red line through it. Also check Settings, Video for the option that stops video automatically when joining a meeting, which is easy to enable by accident and then forget.
5. Reinstall, or use the web client
If everything above checks out, join a test meeting through Zoom's browser client instead. If the camera works there, the desktop installation is damaged and a clean reinstall is the fix. Uninstall Zoom, restart, then install the current version from Zoom's own site rather than an old downloaded installer.
The same logic applies to other apps
Teams, Google Meet, Discord and Skype all fail in the same ways for the same reasons: wrong device selected, another app holding the camera, or a missing per-application permission. Testing in a browser first is always the fastest way to tell an app problem from a hardware one.