Error 400: Bad request while fetching json data fr

Afraid to ask this question as I'm not able to create a jsfiddle for it, but hope someone will be able help.

I'm trying to create a cfc in ColdFusion for an instagram login. That part is done. I'm using postman (google app) and by my credentials I can see the user's data in json, but when I'm converting this into ColdFusion it's giving an error. I tried to change the data-type, header and a lot of lines but am still getting the same error again and again.

My code (replaced ids with xxx for security)

<cftry>
<cfhttp url="https://api.instagram.com/oauth/access_token" method="post" resolveurl="yes">
    <cfhttpparam type="header" name="Content-Type" value="application/x-www-form-urlencoded" />
    <cfhttpparam type="formfield" name="client_id" value="14faxxxxxdc5440f86x6cdd8xxxxf78" />
    <cfhttpparam type="formField" name="client_secret" value="40xa78220cfb" />
    <cfhttpparam type="formField" name="grant_type" value="authorization_code" />
    <cfhttpparam type="formField" name="redirect_uri" value="#URLEncodedFormat('http://example.com/demo/instagramAPI/success.cfm')#" />
    <cfhttpparam type="formField" name="code" value="#url.code#" />
</cfhttp>
<cfdump var="#cfhttp#"><cfabort>
<cfcatch type="any">
<cfdump var="#cfcatch#">
</cfcatch>
</cftry>

I'm following this code from this answer. For more info check this . You can see that I'm getting data by using the same login details, but when doing the same via a cfc I'm getting error.

Error which I'm getting after running the url :

I've read a lot of articles and blogs, but still haven't been able to resolve the error. Can anyone help me understand what I'm doing wrong? If you have any other suggestions, please do let me know.

If any additional information is required, just let me know.

Finally i got the answer of my question after days.. Thanx Miguel-F and Mark A Kruger however Mark your link wasn't good for me as that was out of my issue so..

What i did is to update my SSL certificate. I tried before but was not having much information like Organization unit etc but then i followed the steps given in this Link, provided by Miguel and tested then i got expiration code error.

After that i tried to refresh with ?reinit=1 as i made changes in my cfc but forget to reinitialize after updating the certificate, and then i got the result :)

SO final answer is Update your SSL certificate with proper authorization and cfc can fetch data from Instagram..

Link useful for me One, CFC demo. In cfc demo you can download the cfc for instagram which is also useful (even in case you don't have to update the SSL certificate).

If anyone having issue with Instagram cfc then do let me know.. I spent days on this and can help you.. :)