In Firefox 56+ the "Warn me when website try to redirect or reload the page" setting can no longer be found in Settings. You can modify this pref on the <b>about:config</b> page to disable this accessibility feature. *accessibility.blockautorefresh = false You can open the <b>about:config</b> page via the location/address bar. You can click the button to "Accept the Risk and Continue". *https://support.mozilla.org/en-US/kb/about-config-editor-firefox <i>'''WARNING: Changing preferences through this interface not officially supported''' Hidden settings edited using the about:config tool are explicitly not supported, which means that Mozilla makes no guarantees they will be supported in the future, or that Mozilla will fix them if they break. Mozilla does not test these preferences, and will not in the future. That includes security and performance testing which these preferences may affect. </i> ''[Warning added by moderator]''