Firefox Community Forum

Using Windows 11 and a recent version of Firefox, if I open a command prompt window and enter: C:\Users\Admin\Documents>"C:\Program Files\Mozilla Firefox Esr\firefox.exe" --help

I get nothing.

But it works if I add "| more": C:\Users\Admin\Documents>"C:\Program Files\Mozilla Firefox Esr\firefox.exe" --help | more Usage: C:\Program Files\Mozilla Firefox Esr\firefox.exe [ options ... ] [URL]

      where options include:

 -h or --help       Print this message.
 -v or --version    Print Firefox version.
 --full-version     Print Firefox version, build and platform build ids.
 -P <profile>       Start with <profile>.
 --profile <path>   Start with profile at <path>.
 --migration        Start with migration wizard.
 --ProfileManager   Start with ProfileManager.
 --origin-to-force-quic-on <origin>
                    Force to use QUIC for the specified origin.
 --new-instance     Open new instance, not a new window in running instance.
 --safe-mode        Disables extensions and themes for this session.
 --allow-downgrade  Allows downgrading a profile.
 --MOZ_LOG=<modules> Treated as MOZ_LOG=<modules> environment variable,
                    overrides it.
 --MOZ_LOG_FILE=<file> Treated as MOZ_LOG_FILE=<file> environment variable,
                    overrides it. If MOZ_LOG_FILE is not specified as an
                    argument or as an environment variable, logging will be
                    written to stdout.
 --console          Start Firefox with a debugging console.
 --headless         Run without a GUI.
 --browser          Open a browser window.
 --new-window <url> Open <url> in a new window.
 --new-tab <url>    Open <url> in a new tab.
 --private-window <url> Open <url> in a new private window.
 --preferences      Open Options dialog.
 --screenshot [<path>] Save screenshot to <path> or in working directory.
 --window-size width[,height] Width and optionally height of screenshot.
 --search <term>    Search <term> with your default search engine.
 --setDefaultBrowser Set this app as the default browser.
 --first-startup    Run post-install actions before opening a new window.
 --kiosk            Start the browser in kiosk mode.
 --kiosk-monitor <num> Place kiosk browser window on given monitor.
 --disable-pinch    Disable touch-screen and touch-pad pinch gestures.
 --jsconsole        Open the Browser Console.
 --devtools         Open DevTools on initial load.
 --jsdebugger [<path>] Open the Browser Toolbox. Defaults to the local build
                    but can be overridden by a firefox path.
 --wait-for-jsdebugger Spin event loop until JS debugger connects.
                    Enables debugging (some) application startup code paths.
                    Only has an effect when `--jsdebugger` is also supplied.
 --start-debugger-server [ws:][ <port> | <path> ] Start the devtools server on
                    a TCP port or Unix domain socket path. Defaults to TCP port
                    6000. Use WebSocket protocol if ws: prefix is specified.
 --marionette       Enable remote control server.
 --remote-debugging-port [<port>] Start the Firefox Remote Agent,
                    which is a low-level remote debugging interface used for WebDriver
                    BiDi and CDP. Defaults to port 9222.
 --remote-allow-hosts <hosts> Values of the Host header to allow for incoming requests.
                    Please read security guidelines at https://firefox-source-docs.mozilla.org/remote/Security.html
 --remote-allow-origins <origins> Values of the Origin header to allow for incoming requests.
                    Please read security guidelines at https://firefox-source-docs.mozilla.org/remote/Security.html
 --remote-allow-system-access Enable privileged access to the application's parent process

Can anyone explain why?

Is it possible to change Firefox so that it works without "| more"?

Note that the above was on my Windows 11 laptop, but I'm sending this from my Windows 7 desktop. None of the suggested topics were appropriate, so I selected the first one "Accessibility".