What is the default web browser? https://support.mozilla.org/en-US/kb/how-make-web-links-open-firefox-default https://support.mozilla.org/en-US/kb/setting-firefox-default-browser-does-not-work https://support.mozilla.org/en-US/questions/1207775 https://support.mozilla.org/en-US/questions/1208759#answer-1086882 https://support.mozilla.org/en-US/kb/how-change-your-default-browser-windows-10 https://www.bing.com/search?q=change+default+browser+windows+10