Icon fonts not loading in IE11

Ran into a similar problem, and from your screenshot above, the response has a Cache-Control header of ‘no-store’. IE seems to have issues with caching and fonts. Removing both the ‘Cache-Control: no-store’ and the “Pragma: no-cache” headers worked for us to get icon fonts to show up again. https://github.com/FortAwesome/Font-Awesome/issues/6454

Internet Explorer 9, 10 & 11 Event constructor doesn’t work

There’s an IE polyfill for the CustomEvent constructor at MDN. Adding CustomEvent to IE and using that instead works. (function () { if ( typeof window.CustomEvent === “function” ) return false; //If not IE function CustomEvent ( event, params ) { params = params || { bubbles: false, cancelable: false, detail: undefined }; var evt … Read more