Fix Mac webcam not working

The essential answer

On macOS Sequoia, a webcam that will not show video is almost always one of four things: the Mac does not detect the camera, the app is blocked by Camera privacy permission, the app is capturing a different camera, or another app already has the camera. Confirm which of those is true before you change settings. A built-in FaceTime camera, a USB webcam, and Continuity Camera (an iPhone used as a Mac camera) fail in different places, so the hardware in front of you changes the first check.

This guide is for video capture on Sequoia. A silent microphone is a separate input, with its own permission and its own picker. A black preview, a “camera not found” message, and a live picture of the wrong room are also different failures. If every app can see the camera except one, the OS and the hardware are already doing their job.

What each check actually proves

Work through only the layers that match the symptom. A passing check supports a conclusion about that layer alone. Photo Booth showing your face does not prove a meeting app is configured correctly, a Camera permission toggle does not prove the sensor works, and a USB reseat does not prove privacy settings are granted.

Check	If this happens	What it supports	What it does not prove
Look at the lens, cover, cable, and port	Cover closed, cable loose, or the camera unplugged	A physical or connection problem is in play	Software permission, app picker, or image quality
System Information, Camera section	A camera name appears, or the section is empty	Whether macOS has enumerated a camera device	Whether an app may use it, which camera the app selected, or whether the picture is in focus
System Settings, Privacy and Security, Camera	The app is off, missing, or on	Whether Sequoia has granted that app camera access	Whether the camera is attached, detected, or currently free
The app’s own camera or video menu	A different camera is selected, or the menu is empty	Active input selection inside that app	System-wide detection or Camera permission for other apps
Photo Booth or FaceTime versus the failing app	Apple’s app works and the other does not	The camera can capture video for an allowed app	The failing app’s settings, plugins, or virtual-camera software
Camera-in-use indicator in Control Center or the menu bar	Another app is listed as using the camera	The hardware may already be held by a process	That permissions are wrong or that the camera is missing

Start with what you can see

If this is a Mac notebook or iMac with a built-in camera, check for a sliding cover, a case flap, or anything over the lens at the top of the display. A covered sensor can look exactly like a software failure. If this is a USB or Thunderbolt webcam, reseat the cable at both ends and try a port on the Mac itself rather than a hub or dock. That result speaks only to the connection. It does not tell you whether Sequoia has granted Camera access.

Continuity Camera needs the iPhone powered on, nearby, signed into the same Apple Account, and eligible as a Mac camera. If the Mac is looking for an iPhone that is asleep, out of range, or using a different account, the Continuity camera will be missing even when the built-in FaceTime camera is fine.

Confirm the Mac can see a camera

Open System Information and select Camera (under Camera or the equivalent hardware list on your Mac). If a camera is listed, Sequoia has detected a video device. That listing does not mean any given app may use it, and it does not mean the picture will be sharp, correctly exposed, or the camera you intended. If the list is empty, stop treating this as an app setting. Detection failed, so permission toggles in a meeting app cannot create a camera that the system has not enumerated.

An empty Camera list after a USB reseat points at the cable, port, hub, or the external camera’s own power. An empty list for a built-in FaceTime camera, with no cover and no external device in the mix, points at hardware or a system-level camera stack problem rather than one app’s preferences.

Confirm Camera permission, not Microphone permission

On Sequoia, open System Settings, then Privacy and Security, then Camera. The app you are using must be present and switched on. If the Mac asked for camera access and you chose Don’t Allow, or the app was added after an update with the switch left off, that app will fail while others still work. Turning on Microphone in the same Privacy and Security section does not grant camera access. Screen Recording permission is a third control and does not stand in for Camera.

A Camera switch that is on supports only this conclusion: Sequoia is willing to let that app see a camera. It does not confirm that the app picked the right camera, that the camera is free, or that the app’s own video preview is healthy.

Confirm which camera the app selected

macOS does not keep a single system-wide “default webcam” the way System Settings, Sound does for a microphone. Video input is chosen inside the app: FaceTime, Photo Booth, Safari, Chrome, Zoom, Teams, and similar tools each have their own camera or video device menu. Open that menu and see whether the built-in camera, the USB camera, or an iPhone Continuity camera is selected. A live preview of a different room, a virtual camera, or a black tile labeled with another device name is an input-selection problem, even when detection and permission are already correct.

If the app’s camera menu is empty, go back to detection and permission. An empty in-app list is consistent with “no camera enumerated” or “this app is not allowed,” and it is not evidence that the physical lens is broken.

See whether the camera is already in use

Sequoia shows when an app is using the camera, typically with a green camera indicator in Control Center or the menu bar. If another app, a browser tab, or a virtual-camera tool already holds the device, a second app may get a black frame, a busy error, or no device. Quit the listed app completely (not only hide its window) and try the original app again. This check tells you about occupancy. It does not re-test USB detection or the Camera privacy switch.

Split “every app fails” from “one app fails”

Open Photo Booth or FaceTime, which are Apple’s ordinary camera test apps on a Mac. Allow Camera access if Sequoia asks. A working preview there means the selected camera can capture video for an app that has permission. It does not certify a third-party meeting app, a browser site, or a virtual-camera plugin. If Photo Booth is black or missing the camera and System Information also lists nothing, stay on detection and hardware. If Photo Booth works and only one app fails, change that app’s camera permission, camera menu, or quit-and-relaunch behavior, and leave system-wide resets alone.

What to change for each finding

Change only the layer the check implicated. Start with reversible steps, then retest the original symptom in the same app and scene that failed. If the preview appears, the camera name in the app matches the device you intended, and the in-use indicator belongs to that app, the fix held.

• Cover, cable, or port: uncover the lens, reseat the cable, move a USB camera onto a port on the Mac, then reopen the failing app. Success here is a picture from that camera. A still-black preview after a solid connection means you have not fixed permission, selection, or occupancy yet.
• Camera not listed in System Information: treat this as detection. For a USB camera, try a direct port and a known-good cable. For Continuity Camera, wake the iPhone, bring it near the Mac, and confirm the same Apple Account. For a built-in camera that never appears, skip app toggles and use the escalation path below.
• App missing or off under Camera privacy: switch it on, quit the app fully, reopen it, and approve the Camera prompt if Sequoia shows one. Retest in that app. Other apps staying broken means this was not a global hardware failure, and you still need their own permission or picker.
• Wrong camera in the app menu: select the built-in camera, the USB camera, or the iPhone by name. Retest. A good picture on the newly selected device does not mean a previously selected virtual camera was defective.
• Another app holding the camera: quit the app named in Control Center or the menu bar, then reopen the app you need. If the indicator returns immediately, find the leftover process (a browser tab is a common one) before changing privacy switches.
• Only one app fails while Photo Booth or FaceTime works: relaunch that app, confirm its Camera permission, and set its camera menu again. Uninstalling macOS camera drivers is not the next step for a built-in FaceTime camera; Sequoia does not use a user-installed driver for that device in the way Windows often does.

After a Sequoia update, re-check Camera permission for the apps you actually use. Updates can leave an app off, or an app may need a new prompt the first time it opens a camera. That is a permission regression to re-grant, not evidence by itself that the camera module failed. There is no supplied evidence here of a single Sequoia-wide camera defect, so do not treat “it broke after the update” as proof of a hardware fault until detection, permission, selection, and occupancy have been checked.

Restart the Mac after you have set permission and selection correctly and the camera still fails in every app. A restart clears stuck capture sessions. It is a reasonable next step; it is not a diagnosis of the sensor. Updating macOS to the latest Sequoia point release is the documented software-maintenance step if Apple has already shipped a camera fix in Software Update. Installing unsigned third-party “webcam drivers” for a built-in camera is outside ordinary macOS camera repair and is not recommended on the evidence available here.

When to stop and escalate

Stop changing settings when System Information still lists no built-in camera, Apple’s camera apps stay black after a restart, and permission and occupancy are already clean. That pattern is no longer an input-picker problem. Use Apple Diagnostics for hardware on that Mac, and follow Apple’s published steps for your model if a controller reset is documented. Those resets are model-specific. An NVRAM or PRAM reset on Intel Macs can clear startup disk, display, and volume settings. An SMC reset, where Apple still documents one, is also model-specific and is not a first-line webcam fix. Apple silicon Macs do not use the older Intel SMC key combinations; a full shutdown and restart is the documented user-level power reset there.

If only an external webcam is missing, try it on another port or another computer before you assume the Mac’s built-in camera is at fault. If only Continuity Camera is missing, the built-in camera working in Photo Booth already shows that Sequoia’s capture path can run; the remaining work is the iPhone link, not a FaceTime-camera replacement. If video is fine and audio is not, leave the Camera pane and use Microphone permission plus System Settings, Sound, Input. Those controls were never in scope for a video-only failure.

You will know the original problem is resolved when the same app that failed shows a live preview from the camera you selected, Sequoia’s in-use indicator names that app, and the failure does not return after you quit and reopen the app once. If those checks still fail after detection, permission, selection, occupancy, and a restart, escalate to Apple or the camera maker with the results of those tests rather than repeating the same toggles.