How to add favicon.ico in ASP.NET site

I have the same issue. My url is as below

http://somesite/someapplication

Below doesnot work

<link rel="shortcut icon" type="image/x-icon" href="favicon.ico" />

I got it to work like below

<link rel="shortcut icon" type="image/x-icon" href="/someapplication/favicon.ico" />

resolve the url like this href="<%=ResolveUrl("~/favicon.ico")%>"

    <link rel="shortcut icon" type="image/x-icon" href="~/favicon.ico" />

This worked for me. If anyone is troubleshooting while reading this - I found issues when my favicon.ico was not nested in the root folder. I had mine in the Resources folder and was struggling at that point.

/favicon.ico

might do the trick
I have tried this on my sample website

<link rel="shortcut icon" type="image/x-icon" href="~/ows.ico" />

Try this one in your site put the link in MasterPage,It works :)

<link rel="shortcut icon" type="image/x-icon" href="~/favicon.ico" />

I have tested in ,
FireFox.

Chrome.

Opera.

Some troubleshoots:
1. Check if your favicon is accessible (correct url) ,goto view source and click on the favicon link
2. Full refresh your browser by Ctrl+F5 every time you make changes.
3. Try searching from SO you may find your related problem here.

Some Links to help you out:
Serving favicon.ico in ASP.NET MVC
Favicon Not Showing
Why is favicon not visible