Open the bower.json file, which is located in your project route. If you do not see the file inside the Visual Studio Solution Explorer, click on the Show All Files button on the Solution Explorer toolbar.

Add font-awesome as a dependency to the file. The complete listing of the bower.json file is as follows:

         { 
           "name": "asp.net", 
           "private": true, 
           "dependencies": { 
           "bootstrap": "v4.0.0-alpha.3", 
           "font-awesome": "4.6.3" 
           } 
         } 

Visual Studio will download the Font Awesome source files and add a font-awesome subfolder to the wwwroot/lib/ folder inside your project.

Copy the fonts folder located under wwwroot/font-awesome to the wwwroot folder.

Next, open the bootstrap.scss file located in the wwwroot/lib/bootstrap/scss folder and add the following line at the end of the file:

         $fa-font-path: "/fonts"; 
        @import "../../font-awesome/scss/font-awesome.scss";  

Run the compile-sass task via the Task Runner Explorer to recompile the Bootstrap Sass.