macOS defaults

# Disable application quarantine message

Turn off the “Application Downloaded from Internet” quarantine warning.
⚠️ Stopped working on Big Sur.

  • Tested on macOS:
    • Catalina
  • Parameter type: bool

# Set to true (default value)

defaults write com.apple.LaunchServices LSQuarantine -bool true
  • "Application Downloaded from Internet" popup will display

# Set to false

defaults write com.apple.LaunchServices LSQuarantine -bool false
  • "Application Downloaded from Internet" popup will not display

# Read current value

defaults read com.apple.LaunchServices LSQuarantine

# Delete current value

defaults delete com.apple.LaunchServices LSQuarantine

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