With a default install of ASP.NET MVC 5 and an updated Bootstrap 3, loading my project\'s home page does not display CSS styles or the included font glyphicons (404 file not fou
I too was struggling with this miserably.
There has been an update to the Twitter.Bootstrap nuget package from 3.0.1 => 3.0.1.1. The Twitter.Bootstrap package is now just Bootstrap and has been moved to be managed by the Outercurve foundation.
Chris Kirby has changed the folder structures by eliminating the Content/Bootstrap directory and placing all boostrap.css files directly in the Content folder. He also moved the fonts directory into the root of the site.
See more here; (http://chriskirby.net/bootstrap-nuget-package-moving-to-outercurve/)
This resolved the issue I was having and resolved all my glyphicon font issues.