If you are using Font Awesome in your ASP.Net web app which is hosted on IIS, you need to set appropriate mime type for Font Awesome files, otherwise IIS won’t know how to serve them.
To do this, you’ll need to add mime type mapping to <system.webServer> section in your application’s Web.config file.
Before registering each file extension (woff and woff2), we’ll want to remove them first, just in case that mime types for those are already registered on IIS host.
<remove fileExtension=”.woff” />
<mimeMap fileExtension=”.woff” mimeType=”application/x-font-woff” />
<remove fileExtension=”.woff2″ />
<mimeMap fileExtension=”.woff2″ mimeType=”application/x-font-woff2″ />