Token Endpoint Returning HTML

Question

I am trying to get a bearer token from the https://login.microsoftonline.com/{tenant}/oauth2/v2.0/token endpoint. This works fine in postman, but when I try to run it from my node js app, it returns the Sign In html page instead of the bearer token. See code below for implementation:

const tokenUrl = 'https://login.microsoftonline.com/<tenant>/oauth2/v2.0/token';  
const clientId = '<id>';  
const clientSecret = '<secret>';  
  
const form = FormData();  
form.append('client_id', clientId);  
form.append('scope', 'https://graph.microsoft.com/.default');  
form.append('client_secret',clientSecret);  
form.append('grant_type', 'client_credentials');  
  
const getToken = () => {  
  axios.get(tokenUrl, form, {  
    headers: {  
      'Content-Type': 'application/x-www-form-urlencoded',  
      'Host': 'login.microsoftonline.com',  
    }  
  }).then((response) => {  
    return response.data.token;  
  }).catch(e => console.log(e));  
}  

I'm sure I am missing something simple, but I am new to Graph API, thanks in advance for the help.

Answer 1

Hi @AdamHiatt-6223 , I found out the reason is you used the get method in the code to make the request, and getting the token needs to be requested using the post method. Below is my code running axios in my local node environment, and if I change the post method to the get method, it does return the content in html format. Hope this helps. Best Wishes.

const APP_ID = '{ clientId }';  
const APP_SECERET = '{ clientSecret }';  
const TOKEN_ENDPOINT ='https://login.microsoftonline.com/{ tenantid }/oauth2/v2.0/token';  
const MS_GRAPH_SCOPE = 'https://graph.microsoft.com/.default';  
  
const axios = require('axios');  
const qs = require('qs');  
  
const postData = {  
    client_id: APP_ID,  
    scope: MS_GRAPH_SCOPE,  
    client_secret: APP_SECERET,  
    grant_type: 'client_credentials'  
  };  
    
axios.defaults.headers.post['Content-Type'] =  
  'application/x-www-form-urlencoded';  
  
axios  
  .post(TOKEN_ENDPOINT, qs.stringify(postData))  
  .then(response => {  
    console.log(response.data);  
  })  
  .catch(error => {  
    console.log(error);  
  });  

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Answer 2

Thanks so much for the help! Silly mistake on my part.