If your camera shows an error and restarts didn’t fix it, try clearing the Camera app cache, updating your phone software, and checking app permissions. If it still fails, test in safe mode to rule out app conflicts. Otherwise, it could be hardware damage

The error code 0x80004003 in the Windows Camera app is listed as a general error often caused by hardware or driver failure. Use the following Windows‑specific steps instead of mobile guidance:

1. Test the camera in another app
   • Select Start > Camera and check if the preview works.
   • If it works here but not in another app, adjust that app’s camera settings.
2. Check Windows Update (including optional driver updates)
   • Go to Start > Settings > Update & Security > Windows Update > Check for updates (Windows 10) or Settings > Windows Update (Windows 11).
   • If View optional updates or Advanced options > Optional updates is available, open it and install any camera or imaging device driver updates.
   • Restart the PC after updates and test the Camera app again.
3. Update the camera driver in Device Manager
   • Select Start > Device Manager.
   • Expand Cameras (or Imaging devices) and right‑click the camera.
   • Choose Update driver > Search automatically for drivers.
   • After installation, restart the PC and test the camera.
4. Check that the camera is detected and enabled
   • In Device Manager, under Cameras, ensure the device is present and not disabled.
   • If the context menu shows Enable device, select it to turn the camera on.
5. Verify camera privacy settings
   • Go to Start > Settings > Privacy > Camera (Windows 10) or Settings > Privacy & security > Camera (Windows 11).
   • Make sure Camera access for this device and app access to the camera are turned on.
6. Run the Windows Camera troubleshooter
   • Use the Windows Camera troubleshooter in the Get Help app: Windows Camera troubleshooter or Run the troubleshooter in Get Help.
   • Follow the automated steps and apply any fixes it suggests.
7. If the screen is black or still fails with 0x80004003
   • Treat it as possible hardware or driver failure:
     • Re‑run driver update steps above.
     • If the camera still shows only a black screen or the same error in all apps, the hardware may be faulty and might require service.

References:

• Camera app shows error "0xA00F4244 NoCamerasAreAttached"
• Camera doesn't work in Windows