Instagram oauth api gives { "code": 400, "error_type": "OAuthException", "error_message": "No matching code found." }

Question

I am working on an application that integrates with Instagram API to access the user information. I successfully fetch the Access Token using the authorize url but unable to fetch the userId using access_token url:

i am tried both the endpoints:

https://api.instagram.com/oauth/access_token?client_id=48275564e2c445f6b8e1356djfha3e0c&client_secret=ab2062da9f314e3489dke7ae9cbe6e5d&redirect_uri=http://localhost&grant_type=authorization_code 

https://api.instagram.com/oauth/access_token

with the post body as:

client_id=48275564e2c445f6b8e1356djfha3e0c&client_secret=ab2062da9f314e3489dke7ae9cbe6e5d&redirect_uri=http://localhost&grant_type=authorization_code&code=1351860224.4827556.5dc92c4d15ea4a4ea1b0d33eaf0eef19 

(The data in the request is modified), But i am getting the follwing

{     "code": 400,     "error_type": "OAuthException",     "error_message": "No matching code found." } 

I have seen tons of queries and questions but could not find any solution to the problem.

The couple of questions i have is:

1) is the field code in the URL is same as access_token, if not how could i get the code field's value.  2) is there any other mechanism(API) to fetch the user details given the username is not known. 

Please help me as i am completely stuck and running out my deadlines.

Answer 1

For me unchecking Disable implicit OAuth in instagram developer -> manage clients fixed the issue

Answer 2

I found that using either form-data or application/x-www-form-urlencoded works fine. The most important is the code you get from redirect uri is only used by one request. It means you could request the access token once for the code. If the you request more than one time with same code, you'll get the error like this:

{     code: 400,     error_type: "OAuthException",     error_message: "Matching code was not found or was already used." } 

Wish you all the best ;)