A successful DeviceOK webcam test is strong evidence that the camera can produce a browser video stream, so Zoom-specific settings should be checked first.
If the live test passes, the investigation can usually move away from total hardware failure and toward the affected app, permissions, routing or configuration.
Try the simple causes first
- 1
Keep the DeviceOK result as evidence the camera stream works in the browser.
- 2
Open Zoom video settings and select the correct camera.
- 3
Verify Zoom OS camera permission.
Work through the problem in order
- 1
Keep the DeviceOK result as evidence the camera stream works in the browser.
- 2
Open Zoom video settings and select the correct camera.
- 3
Verify Zoom OS camera permission.
- 4
Close any app that may reserve the camera.
- 5
Use Zoom's official camera troubleshooting, then retest.
Use the passing DeviceOK test to narrow the problem to the specific app or settings layer.
If DeviceOK also fails, step back to permissions, connection, OS configuration, and device-level troubleshooting.