Return 404 when page not found

[avm23]

See a solution based on a Flask before_request hook. It also works with a multi-page Dash app (use_pages=True).

Why does dash return a status code of 200 when a page is not found

Thank you for the response but that option only inserts a layout when there is a “404” into dash.page_container and keeps the default layout. I really just want to return a static html file. I will probably end up going with something like @app.server.before_request def override_dash_404(): """ Ensure unknown paths return a proper 404 page. """ # Store the stripped request path once requested_path = flask.request.path.strip("/") # Known Dash and Flask routes dash_routes =…