The problem was that the IE had compatibility settings enabled for intranet pages. Once I disabled it from internet explorer (unchecked) everything started to work.

Thank you.

>If you're using WebForms ~/content/... is not expanded. AFAIK, ~ expansion only works with Razor. So you need to change that to:
>
>

><link href="<%= ResolveUrl("~/content/bootstrap/css/bootstrap.min.css") % rel="stylesheet" type="text/css"/>  
>

>
>You may also have to wrap that into a PlaceHolder control. If I remember right script tags are not allowed in the header directly.
>
>Alternately you can reference bootstrap from a CDN which is not a bad idea anyway:
>
>

><link href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.4/css/bootstrap.min.css" rel="stylesheet">
>

>
>

><script src="//maxcdn.bootstrapcdn.com/bootstrap/3.3.4/js/bootstrap.min.js"></script>
>

>
>http://www.bootstrapcdn.com/
>
>+++ Rick ---
>
>>I am testing my ASP.NET web application on customer server.
>>
>>I am having a little issue referencing Bootstrap.css. Here is how it is referenced in my Site.Master:
>>
>>

>><link href="~/content/bootstrap/css/bootstrap.min.css" rel="stylesheet" type="text/css"/>  
>>

>>
>>The following URL in the browser works (that is, Bootstrap is working):
>>

>>http://localhost:8070/MobileApp/Login.aspx
>>

>>
>>But when I change the URL as follows:
>>

>>http://ServerName:8070/MobileApp/Login.aspx
>>

>>
>>The Bootstrap does not work (the layout is all messed up).
>>
>>The structure of the application is as following (in inetpub\www)
>>

>>MainAppSite/MobileWeb
>>

>>
>>MainAppSite is the site where main application reside. MobileWeb is sub-folder where Virtual application reside. The MobileWeb Virtual application should work completely independently of the MainAppSite. And it works with the "Localhost" but not with the server name.
>>
>>What is wrong with how I reference the Bootstrap.css (above)?
>>
>>TIA