HELP! My .less is 404ing

  1. Make certain that the .less files are marked as Content in VS
  2. Make certain that its not a less compilation problem. Do this by running the dotless compiler manually from the command line.
  3. Perhaps you need to add the .less mime type mapping in IIS / your web config file:

 

<system.webServer>
  <staticContent>
    <mimeMap fileExtension=".less" mimeType="text/css" />
  </staticContent >
</system.webServer>