MacBook Air M4 camera not working after macOS update

Thank you for reaching out. 😉

First, let’s see if this issue happens in Safe Mode:

1. Shut down your Mac.
2. Press and hold the power button on your Mac. As you continue to hold the power button, your Mac turns on and loads startup options. When you see Options, release the power button.
3. Select your startup disk. It's named Macintosh HD, unless you changed its name.
4. Press and hold the Shift key, then click the “Continue in Safe Mode” button below your startup disk.
5. Log in to your Mac. You might be asked to log in again.

If the strange behaviors do not occur, then it may possibly be a software issue.

If the issue doesn't continue in safe mode:

Leave safe mode by restarting your Mac normally, then try to reproduce the issue.

If the camera works, it might have been resolved by the other things that safe mode did at startup, such as checking your disk and clearing caches.

If the problem persists, then let’s try this:

• Software Update.
• Use Apple Diagnostics to test your Mac.

If none of those ideas work, then I recommend service.

Service Checklist:

• Mac service pricing.
• Check AppleCare Coverage.
• Get your Mac ready for service.

Click ▶︎ Start a Service Request. ⚛️

Need more help?

• United States: 1-800-APLCARE.
• Contact Support.
• Mac Support.
• Mac User Guide.

Click ▶︎ Check Repair Status. 🔧

Good luck! 👋🏼😉

Smiliñ 😎 Brian

Based on the fact that your apps don't recognize a camera present, it sounds like you have a visit to Apple service in your future.

Did you also happen to take a peek at the state of the camera hardware in System Information app under the Hardware heading?

You can make a Genius Bar appointment for hardware service and support using this link: Make a Genius Bar reservation - Apple Support

Customer Support (800) MY–APPLE (800–692–7753) or on line /getsupport.apple.com/ 

or call AppleCare Support at 1-800-APLCARE (800-275-2273) 

Outside the US: Apple’s global phone numbers: Contact Apple Support 

Follow up -

At the risk of stating the obvious, you have restarted your Mac again since doing your OS update, yes?

I'm having the same problem. The camera indicator light stays on. When I quit the app, there are no apps using the camera anymore, but the indicator light remains on.

In System Information, under Hardware, the built-in camera is still listed with its unique identifier, so it appears to be detected by the system.

[Edited by Moderator]