This still happening, because the NXM protocol is not handled by the browser, and Windows has no idea what it is. So, you click the "Slow Download" button, and exactly nothing at all happens. Inspecting the code with Chrome gives the following result: button id="slowDownloadButton" class="rj-btn rj-btn-secondary rj-btn-full" data-download-url="#ERROR-download-location-not-found"