Bootstrap Icons not showing in published ASP.NET MVC application

Question

--- NB: Go to the EDITED 2 section for summary ----

I have an ASP.NT MVC (4) application. I integrated (twitter)Bootstrap to it. Bootstrap is working perfectly, but the icons does not show correctly when I publish the application.

I tried to republish the application without success.

For clarify I put some images here below.

When I run my application from VS2013 the result is this (which is OK):

In booth, IE and Chrome.

But when I run the published application the result is this (which is NOT ok):

• Chrome

• IE (10)

This problem has, somehow, to be with the evaluated CSS but I don't know at which point this could be happening.

The evaluated css in the local application are this (which is OK):

• Chrome

• IE

But In the published application I have this (which is NOT ok):

• Chrome:

• IE:

Some has experienced this behavior?

What can I do for solve this weird problem?

--------------------------- EDITED ------------------------------

I get the font files (.eot, .svg, .ttf and .woff) to be included when publishing my application. When I access the default page (application root http://localhost/) which is the page showing the icons the files being showed in the Chrome's Developper Tools Network tab are:

Before including the files I was getting 404 errors for the files, so I could guess they continue to be requested even if they are not showed in the Network Tab.

Though, the icons are not showed correctly.

------------------------ EDITED 2 ---------------------------

Well, I restart my site in the IIS 7. And the request start to be triggered. These are the file requests showed in the Chrome's Developper Tools Network Tab:

The resquest is then looking for the files in: /Content/themes/fonts/ but they are in: /Content/themes/base/fonts/

The base folder containt a bootstrap folder which containt the bootstrap.css file. In the CSS file there are this class referening the fonts files:

@font-face {
  font-family: 'Glyphicons Halflings';
  src: url('../fonts/glyphicons-halflings-regular.eot');
  src: url('../fonts/glyphicons-halflings-regular.eot?#iefix') format('embedded-opentype'), url('../fonts/glyphicons-halflings-regular.woff') format('woff'), url('../fonts/glyphicons-halflings-regular.ttf') format('truetype'), url('../fonts/glyphicons-halflings-regular.svg#glyphicons-halflingsregular') format('svg');
}

It seems the references to the fonts files are good as the the files tree is this:

I could change the class to be:

@font-face {
      font-family: 'Glyphicons Halflings';
      src: url('../base/fonts/glyphicons-halflings-regular.eot');
      src: url('../base/fonts/glyphicons-halflings-regular.eot?#iefix') format('embedded-opentype'), url('../base/fonts/glyphicons-halflings-regular.woff') format('woff'), url('../base/fonts/glyphicons-halflings-regular.ttf') format('truetype'), url('../base/fonts/glyphicons-halflings-regular.svg#glyphicons-halflingsregular') format('svg');
    }

But, I would actually know what this is happening and how to solve it! Besides, the icons will be showed in the published site but not in the local site (running from VS2013 with iisexpress). Thank you in advance for your help!

Answer 1

If your bundling your scripts and CSS then assets like images may not be found.

In your BundleConfig.cs file, create your bundle with CssRewriteUrlTransform:

bundles.Add(new StyleBundle("~/Content/css/bootstrap").Include("~/Content/bootstrap.min.css", new CssRewriteUrlTransform()));

Include in _Layout.cshtml:

@Styles.Render("~/Content/css/bootstrap")

Everything should be good. And yes, viewing what's happening over the network to see what URL is generating the 404s will help.

EDIT: Ensure you are using Microsoft.AspNet.Web.Optimization v1.1.0. Confirmed version 1.1.3 causes this error as well.

Answer 2

IIS doesn't know how to handle (serve) those files (MIMEs).

Add this to your system.webServer node in the web.config file and you'll be golden:

<staticContent>    
      <mimeMap fileExtension=".otf" mimeType="font/otf" />
      <mimeMap fileExtension=".woff" mimeType="font/x-woff" />
      <!-- add more MIMEs if needed... -->
</staticContent>

--Edited, see Ryans and mine comment below: Even better, to be safe, remove and add the mime type maping:

<staticContent>    
    <remove fileExtension=".otf" />
    <mimeMap fileExtension=".otf" mimeType="font/otf" />
    <remove fileExtension=".woff" />
    <mimeMap fileExtension=".woff" mimeType="font/x-woff" />
    <!-- add more MIMEs if needed... -->
</staticContent>

Answer 3

Try disabling bundle optimizations, what happens is that the path to the bundled css stylesheet conflicts with referenced images. For example. You might have a css file /Content/css/style.css => in a bundle "~/Content/css" in which an image is specified as such

    .someclass { background-image:url(img/someimg.png) }

This would resolve the image to /Content/css/img/someimg.png

Now you deploy the release build and the css file is now rendered to a bundle URL such as /Content/css Now the image URL resolves to /Content/img/someimg.png

You can change this behaviour in App_Start\BundleConfig.cs

    System.Web.Optimization.BundleTable.EnableOptimizations = false;

Answer 4

Run Fiddler or use the network tab on your browser's developer tools. What you should look for is 404 results for the requests that download the font files.

Also make sure that the published site contains ~/Fonts/glyphicons-halflings-regular.[eot,svg,ttf,woff] files.

The differences you are seeing in the computed CSS rules are because of minified CSS files (controlled by debug=true/false setting in web.config file). The value \e013 is just another way of writing the symbol you are seeing.

Answer 5

Note to readers: be sure to read @user2261073's comment and @Jeff's answer concerning a bug in the customizer. It's likely the cause of your problem.

---

The font file isn't being loaded correctly. Check if the files are in their expected location.

@font-face {
  font-family: 'Glyphicons Halflings';
  src: url('../fonts/glyphicons-halflings-regular.eot');
  src: url('../fonts/glyphicons-halflings-regular.eot?#iefix') format('embedded-opentype'), url('../fonts/glyphicons-halflings-regular.woff') format('woff'), url('../fonts/glyphicons-halflings-regular.ttf') format('truetype'), url('../fonts/glyphicons-halflings-regular.svg#glyphicons-halflingsregular') format('svg');
}

It might also be a mimetype issue. Chrome's dev tools show downloaded fonts in the network tab:

The bootstrap customizer seems to be sending different sized fonts than the ones that are inside the whole bootstrap package that comes with the examples. If you use customized bootstrap, try replacing font files..

Update

You get a status code 304 which represents "not modified static files that downloaded or in client cache." So its related to client cache and requires some peek into iis.

This will be helpful in solving your issue

Answer 6

Including the below line in RegisterBundles() of BundleConfig.cs file worked for me.

System.Web.Optimization.BundleTable.EnableOptimizations = false;

Answer 7

The solution from igorludi should working fine.

And I think, we can tell the IIS to handles those "new" MIME TYPE by:

• Select the site;

• Go to IIS >> MIME Types;

• Adds those new extension and type (see the XML on igorludi answer).

• Restart the site.

Answer 8

I was also having this issue with MVC 5 and Bootstrap v3.3.6.

Failed to load resource: the server responded with a status of 404 (Not Found) http://NameOfSite/Error/NotFound?aspxerrorpath=/bundles/fonts/glyphicons-halflings-regular.woff2

You need to update the @icon-font-path in theContent/bootstrap/variables.less file from "../fonts/"; to "/Content/fonts/";

Answer 9

1. Make sure .woff extension is added correctly to IIS MIME Types of your website in order to get rid off possible 404 errors

2. Fix caching issues by removing the following web.config lines because Internet Explorer does not seem to like it:

   <add name="Cache-Control" value="no-cache, no-store" />
   <add name="Pragma" value="no-cache" />
   

Answer 10

Have you included your bootstrap files into the project? Only the files, included into the solution are to be published.

Answer 11

try <link rel="stylesheet" href="~/Content/bootstrap/bootstrap.css" /> and try @Styles.Render("~/bootstrap/css") The only difference that I found

Answer 12

I had the same problem. If you still can't solve it, the problem is in the reference to the archives of the icons.

For your case the reference should be : "../Content/themes/base/fonts/glyphicons-halflings-regular..."

Finally, Sorry for my english if you don't understand because i talk spanish and i'm just practicing the english language. :D

Answer 13

I had this problem too. Rather than have to move files around you can create a virtual directory in the root of the project in IIS.

Answer 14

I had this problem also. The solution that I used is within this question: https://stackoverflow.com/questions/27254055/manually-added-directory-not-automatically-included-with-one-click-file-system-d

• unload the project
• edit the csproj file
• change None include to Content Include for the relevant Font files.

Use one-click deploy again and the files are published.

Answer 15

You have to set the property Copy to Output Directory of the files on Copy always

Answer 16

adding: BundleTable.EnableOptimizations = False fixed my issue.

Public Sub RegisterBundles(ByVal bundles As BundleCollection)
    BundleTable.EnableOptimizations = False
    bundles.Add(New StyleBundle("~/DefaultStyles").Include(
      "~/Content/custom3.css"))
End Sub

Answer 17

Anyone still looking for an alternate answer, this method suggested on another StackOverflow answer resolves the issue.

Change the Build action on the .eot, .ttf, & .woff files to "Content" instead of the default value of "None". Doing this solved my issue.