Why is my json file not found?

I have a json file in a Content folder within my asp.net project:

<projectName>
	\Content
		NBCCJr.json

...and the code to access it:

$.getJSON('~/Content/NBCCJr.json', function (data) {
    $.each(data, function(i, dataPoint) {
        // Bla
      });
  });
)

...but nothing happens when the code is called; the browser console says, "Failed to load resource: the server responded with a status of 404 (Not Found)"

Why is it not found? Isn't "tilde whack filename" the correct route to the file?

UPDATE

I also tried it with the "whacks" backwards:

$.getJSON('~\Content\NBCCJr.json', function (data) {

...and got the same result ("Failed to load resource: the server responded with a status of 404 (Not Found)")

UPDATE 2

Then I tried it sans a prepended whack thusly:

$.getJSON('Content/NBCCJr.json', function (data) {

...and I get this ambiguous message in the console:

*GET http://localhost:9702/Content/NBCCJr.json 404 (Not Found) jquery.js:8724
XHR finished loading: "http://localhost:9702/Content/NBCCJr.json".*

So it was not found and yet loaded anyway?

UPDATE 3

When I attempted to navigate to the file in the browser by changing:

http://localhost:9702/Default.cshtml

...to:

http://localhost:9702/Content/NBCCJr.json

I got an informative WSOD message from Vint Cerf, Tim Berners-Lee, and/or Al Gore saying:

HTTP Error 404.3 - Not Found The page you are requesting cannot be served because of the extension configuration. If the page is a script, add a handler. If the file should be downloaded, add a MIME map.

UPDATE 4

Thanks to JAM, it is now working.

I had to add this to Web.Config:

  <system.webServer>
    <staticContent>
      <mimeMap fileExtension=".json" mimeType="application/json" />
    </staticContent>
  </system.webServer>

Have you tried removing the ~ ?

As in:

$.getJSON('/Content/dumboJr.json', function (data) {
    $.each(data, function(i, dataPoint) {
        // Bla
      });
  });
)

To allow the IIS to serve JSON files, try adding this to your web.config:

<staticContent>
    <mimeMap fileExtension=".json" mimeType="application/json" />
</staticContent>

Solution is you need to add json file extension type in MIME Types

Method 1

Go to IIS, Select your application and Find MIME Types

Click on Add from Right panel

File Name Extension = .json

MIME Type = application/json

After adding .json file type in MIME Types, Restart IIS and try to access json file

---

Method 2

Go to web.config of that application and add this lines in it

 <system.webServer>
   <staticContent>
     <mimeMap fileExtension=".json" mimeType="application/json" />
   </staticContent>
 </system.webServer>

Try putting the *.json file in the webRoot, not in a sub folder. And then reference it like:

$.getJSON('NBCCJr.json', function (data) {

This of course requires the previous inclusion and instantiation of the jQuery system object from: jquery.min.js or the JSON structure from: json2-1.0.min.js

I Changed .json to .txt and request is working fine. I am not sure about the consequence .txt can cause.

If you use ASP.NET Core, just put the file in wwwroot but if you use ASP.NET framework, this allows JSON extension from web.config as follows:

<staticContent>
    <mimeMap fileExtension=".json" mimeType="application/json" />
</staticContent>

and

<location path="Content">
    <system.web>
        <authorization>
            <allow users="*" />
        </authorization>
    </system.web>
</location>