Can't use camera in Facebook messenger

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• Go to ‘Tools > System Tools > Tweak Manager > System Security > Application Rights’ and uncheck ‘Disable app access to your camera’

• Go to ‘Tools > System Tools > Tweak Manager > Microsoft Edge > Video and Audio Recording’ and uncheck ‘Block requests to record video’

• Go to ‘Tools > System Tools > Tweak Manager > Google Chrome > Video and Audio Recording’ and uncheck ‘Block requests to record video’

• Go to ‘File > Rescue Center’ and check if ‘Applying tweak: Access to devices’ is present. Select it, and click ‘Restore’ > Yes > OK.

• Go to your browser settings and ensure that facebook.com has permission to use your camera. For example, in Google Chrome: ‘Privacy and Security > Site Settings > Camera’ and select ‘Sites can ask to use your camera’.
• Check your device's operating system settings to confirm that the camera is allowed for all relevant apps. For example, on Windows 11 go to ‘Settings > Privacy & Security > Camera’ and switch the toggles ‘Camera access’, ‘Let apps access your camera’, and ‘Let desktop apps access your camera’ on.

• Sometimes, a simple restart can resolve conflicts with software and hardware.

• Ensure your camera drivers are up to date. You can check for updates in Windows Device Manager.

• Verify that the camera works with other applications (like Zoom or Skype). If it doesn’t, the issue might be with the camera itself.

• Look for any other software that might be interfering with your camera, such as virtual camera applications or other security software.