Using Internet Information Server (IIS) as webserver platform, the browser cannot download xerte/modules/xerte/parent_templates/Nottingham/common_html5/font-awesome-4.3.0/fonts/fontawesome-webfont.woff2. This is because the extension .woff2 is not registered as a MIME type in IIS. Solution is to add this extension via the Internet Information Services Manager by selecting "MIME Types" at the server level (or at the site level) and mimic the entry for extension .woff which is font/x-woff