Chrome on macOS

  1. In the Finder, click Go > Utilities.
  2. Open the Terminal app.

    The Terminal app window appears.

  3. Run the applicable command in the Terminal:

    To disable

    Run

    Incognito mode

    defaults write com.google.chrome IncognitoModeAvailability -integer 1z

    BrowserGuest mode

    defaults write com.google.Chrome BrowserGuestModeEnabled -bool false