Cannot reach Action in api Web API 2 Controller in MVC 5 app

I’ve tried to follow default Web API tutorial:

Here’s what I did:

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  • 1) I added Action Routing in my WebApiConfig:

       name: "ActionApi",
       routeTemplate: "api/{controller}/{action}/{id}",
       defaults: new { id = RouteParameter.Optional }

    2) I added a link on my nav bar with client side javascript call:

    <a onclick="RetrieveNext();" href="#">Retrieve next</a>

    3) Here’s my view:

    <div class="row">
        <div class="col-md-4">
            <h2>Next barcode</h2>
            <p id="barcode">
                No available barcode
        var uri = 'api/Barcode';
        $(document).ready(function () {
        function RetrieveNext() {
            uri = 'api/Barcode/RetrieveNext';
                .done(function (data) {
                .fail(function (jqXHR, textStatus, err) {
                    $('#barcode').text('Error: ' + err);

    4) Here’s my simple ApiController with 1 Action:

    public class BarcodeController : ApiController
        public IHttpActionResult RetrieveNext()
            string barcode = "123456";
            if (barcode == null)
            return NotFound();
            return Ok(barcode);

    When I click my link I’m getting: Error: Not Found inside of my <p id="barcode">, which means JavaScript works, but Action wasn’t called.

    Here’s Call details:

    enter image description here

    What I missed here? I put breakpoint in my Action and I can’t reach this code…

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  • One Solution collect form web for “Cannot reach Action in api Web API 2 Controller in MVC 5 app”

    How stupid is THAT??? I found what is the issue here: 404 error after adding Web API to an existing MVC Web Application

    It’s related to global.asax file. Even when you add WEB API to your project, visual studio opens readme.txt file for you with few tips how to add few lines of code to your global.asax file. THERE’S no single word about WHERE you should put your code (here it’s really makes difference!)

    So, copying from post I listed ablove:
    While it doesn’t work with:

    protected void Application_Start()
        GlobalConfiguration.Configure(WebApiConfig.Register); //I AM THE 4th

    It works with:

    protected void Application_Start()
        GlobalConfiguration.Configure(WebApiConfig.Register); //I AM THE 2nd