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Editorial Team
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Asked: 2026-05-21T15:53:44+00:00

I have an exception in project: The controller for path ‘/Content/Images/CustomFavicon.ico’ was not found

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I have an exception in project:
The controller for path ‘/Content/Images/CustomFavicon.ico’ was not found or does not implement IController.

I have found answer here: I'm getting a "Does not implement IController" error on images and robots.txt in MVC2

which gives me description of my problem and solution for it.

However I am weak on regular expressions, so have the same problem.
How can i modify this expression to math both paths of icon expression for example below:

(/.*)?CustomFavicon.ico?(/.*)

if my html link file look

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
 <head id="ctl00_Head1">
  <link rel="shortcut icon" HREF="/Content/Images/CustomFavicon.ico">
  <link rel="icon" href="/Content/Images/CustomFavicon.ico" type="image/x-icon"><title>
   Home Page
  </title></head>
<body>

acodring to my test (see below), it finds only one match which also contains html I don’t want:

see here my test: http://regexr.com?2tl4a

This is going to be used in my Global.aspx file:

routes.IgnoreRoute("{resource}.axd/{*pathInfo}");
  routes.IgnoreRoute("{resource}.aspx/{*pathInfo}");
  //ignore route for ico files
  routes.IgnoreRoute("{*favicon}", new { favicon = @"(.*/)?CustomFavicon.ico(/.*)?" });
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1 Answer

  1. Editorial Team

    From your regex I am not sure what you want to match. I modified it a bit so that the two path are matched.

    (?:\/.*?)CustomFavicon.ico

    See here your modified example

    If you want to have this in a capturing group, then put brackets around it, like:

    ((?:\/.*?)CustomFavicon.ico)
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