Test your camera in Zoom's settings before you join a call

The fastest way to check whether your camera works in Zoom is to open Zoom, go to Settings, click Video, and look at the preview window. If you see yourself, your camera is connected and working. If the preview is black or shows "No Camera Detected," your camera either isn't plugged in, isn't turned on, or Zoom doesn't have permission to use it.

You do not need to join a meeting to run this test. The preview appears in the settings panel itself, so you can troubleshoot before anyone else is waiting on the call. This is the method most people use because it takes about 30 seconds and tells you everything you need to know.

On Windows, open the Zoom desktop app, click your profile picture in the top right, select Settings, then click Video on the left sidebar. On Mac, click Zoom in the menu bar, then Preferences, then Video. The preview window appears in the center of the screen.

Key Takeaways

  • Open Zoom Settings, click Video, and look at the preview window to see if your camera is working without joining a meeting.
  • If the preview is black or says "No Camera Detected," check that your camera is plugged in and that Zoom has permission to access it.
  • You can also test your camera by joining a meeting early and checking your video before turning on your microphone.
  • On some laptops, the camera may be disabled in BIOS or hardware settings, which requires a restart or system settings change to fix.
  • External cameras need to be plugged in and selected in the Video settings dropdown before Zoom can use them.

Check which camera Zoom is using

If you have more than one camera connected — for example, a built-in laptop camera and an external USB camera — Zoom defaults to one of them. You can see which one in the Video settings by looking at the dropdown menu at the top of the preview window. It usually says "Built-in Camera" or the name of your external camera.

Click the dropdown to switch cameras if you want to use a different one. The preview updates when ready to show what that camera sees. If your external camera does not appear in the list, it may not be plugged in, or your computer may not have recognized it yet. Unplug it, wait 10 seconds, and plug it back in.

Verify Zoom has permission to access your camera

On Windows 10 and 11, Zoom needs permission from your operating system to use the camera. If you see "No Camera Detected" in the preview but your camera is plugged in, go to Settings > Privacy & Security > Camera and make sure the toggle next to Zoom is turned on. If Zoom does not appear in the list, restart Zoom and try again.

On Mac, the first time you open Zoom, the system asks for permission. If you clicked "Don't Allow," you can fix it by going to System Preferences > Security & Privacy > Camera and checking that Zoom is in the list with a checkmark. You may need to restart Zoom after changing this.

If you recently updated your operating system, permission settings sometimes reset. Restarting your computer often fixes this faster than troubleshooting the settings.

Test your camera by joining a meeting early

Another way to test your camera is to join a Zoom meeting a few minutes before it starts. When you enter the meeting, your video preview appears on your screen before you unmute or turn on your camera. You can see exactly what others will see, including the angle, lighting, and whether anything is blocking the lens.

This method is useful because it shows you the real meeting environment, not just the settings panel. You can adjust your position, lighting, or camera angle based on what you see. Once you are satisfied, turn on your video by clicking the camera icon at the bottom of the screen.

Check for physical obstructions and lighting

A camera that shows a preview in settings but looks dark or blurry in a meeting usually has a physical problem, not a software one. Check that nothing is covering the camera lens — dust, a sticker, or a webcam cover. Wipe the lens gently with a soft, dry cloth if it looks dirty.

Lighting matters more than most people expect. If you are sitting with a bright window or light behind you, your face will appear dark. Move so the light is in front of you or to the side. If your room is very dim, move closer to a lamp or window. The camera preview in Zoom settings shows you exactly what the lighting looks like, so adjust until you are happy with it.

Restart Zoom or your computer if the camera does not work

If your camera is plugged in, Zoom has permission, and you still see no preview, close Zoom completely and open it again. On Windows, right-click the Zoom icon in the system tray and click Exit Zoom. On Mac, click Zoom in the menu bar and select Quit Zoom.

If restarting Zoom does not work, restart your computer. This resets the connection between your camera and Zoom and often fixes problems that settings changes cannot. After your computer restarts, open Zoom and check the Video settings again.

If you still see no preview after restarting, your camera may be disabled in your computer's BIOS or hardware settings. This is rare on laptops but can happen after a system update. On Windows, you can also try opening the Camera app (search for "Camera" in the Start menu) to see if the camera works outside Zoom. If it does not work there either, the problem is with your computer or camera, not Zoom.

Troubleshoot external USB cameras

External cameras sometimes stop working because the USB connection is loose or the camera is not selected in Zoom. First, unplug the camera from the USB port, wait 10 seconds, and plug it back in. Then open Zoom Settings > Video and check the camera dropdown to make sure your external camera is selected.

If the camera still does not appear in the dropdown, try plugging it into a different USB port. Some USB ports on older computers do not provide enough power for cameras. If you have a USB hub, try plugging the camera directly into the computer instead of through the hub.

If the camera works on another computer or in another app (like the Windows Camera app or Photo Booth on Mac), the problem is specific to Zoom. Uninstall Zoom, restart your computer, and read the latest version from zoom.us. This clears out any corrupted settings files that might be blocking the camera.

Frequently Asked Questions

Why does my camera show in settings but not in the meeting?

This usually means another app is using the camera at the same time. Close any other apps that might be accessing it — video chat apps, photo apps, or screen recording software. On Windows, open Task Manager and search for any app using the camera. On Mac, Activity Monitor can show you the same thing. Restart Zoom after closing the other app.

Can I test my camera without joining a meeting?

Yes. Open Zoom Settings, click Video, and look at the preview window. You do not need to join a meeting or turn on your microphone. This is the fastest way to check if your camera is working.

What if my camera works in other apps but not in Zoom?

Zoom may not have permission to use the camera, or the camera setting in Zoom may be pointing to the wrong device. First, check that Zoom has camera permission in your system settings (Privacy & Security on Windows, Security & Privacy on Mac). Then open Zoom Settings > Video and make sure the correct camera is selected in the dropdown menu.

Is there a way to test my camera sound and video together?

Zoom has a built-in audio and video test. In Settings, click Audio to test your microphone and speakers, and click Video to test your camera. You can also join a test meeting at zoom.us/test to see both at once before a real meeting.

Why is my camera preview upside down or sideways?

Some external cameras have a rotation setting in their own software. Check whether the camera came with a driver or app that lets you adjust the angle. If not, you may need to physically rotate the camera mount. Built-in laptop cameras rarely have this problem unless your computer's display is set to rotate, which is uncommon.