Check in this order
A camera that works in other apps but not in the browser is almost always blocked by a permission. A camera that works nowhere is a hardware or driver matter. The test above tells you which case you are in, and the steps below go from the most likely cause to the least.
- Run the test and read the message. If the browser asked and the picture appeared, the camera and the browser are fine. If you see a message that access was denied, the browser or the system is blocking it. If the camera was not found or could not start, it is disconnected, switched off or busy. The webcam test page explains every message in detail.
- Permission for the site. Each site needs its own permission. A small camera icon with a cross in the address bar means the site is blocked. Click it, allow the camera and reload the page.
- Permission for the browser. Windows, macOS, Android and iOS also decide whether the browser as a whole may use the camera. If this is off, the browser shows an error without ever asking you. The sections below show where the switch is.
- The camera is busy. Close video-call apps, recording software and other browsers. On many computers only one program can use the camera at a time, and it stays busy even when the app is minimised.
- Covers and keys. Many laptops have a sliding shutter above the screen or a key with a crossed-out camera symbol. A black picture with the camera light off often means the camera is switched off this way.
- Extensions. Privacy and ad-blocking extensions can block the camera on some sites. Open the page in a private window, where most extensions do not run, and try again.
In each browser
Chrome and Edge. Click the icon at the left of the address bar, open the site settings and set the camera to Allow. The full list of sites that are allowed or blocked is in the browser settings under site permissions; search the settings for “camera”. The same applies to other browsers built on Chromium, such as Opera, Brave and Vivaldi.
Firefox. A crossed-out camera icon appears in the address bar when a site is blocked; click it to clear the block. The complete list is in Settings → Privacy & Security → Permissions → Camera.
Safari on a Mac. Open Safari → Settings → Websites → Camera and choose Allow or Ask for the site.
On Windows
Open Settings → Privacy & security → Camera. Camera access must be on, and further down, desktop apps must be allowed to use the camera. Browsers are desktop apps, so this switch applies to Chrome, Edge and Firefox. In Windows 10 look under Settings → Privacy → Camera. If the camera is missing in every app, check Device Manager for a disabled or failing camera, and try another USB port for an external webcam.
On a Mac
Open System Settings → Privacy & Security → Camera and switch your browser on. Quit the browser completely and open it again; the change applies only to a fresh start. The green light next to the camera shows when something is using it.
On Android
In Chrome, tap the icon at the left of the address bar, open permissions and allow the camera for the site. Then check the phone’s own settings: apps, your browser, permissions, camera. Menu names vary between phone makers. On Android 12 and newer, make sure camera access is on in the quick settings panel.
On iPhone and iPad
Open Settings → Safari (under Apps in recent iOS versions) and set Camera to Ask or Allow. Chrome and other browsers have their own camera switch in their page of the Settings app. If the camera is missing everywhere, check Screen Time: Content & Privacy Restrictions can turn it off for the whole device.
Once the picture is back, check the sound as well with the microphone test. If the camera works but Zoom does not hear you, see microphone not working in Zoom.