Getting status 403 when trying to get oAuth access token

[po123 (Po)]

Description
I’m trying to get an oAuth access token from a user, but I keep getting the 403 forbidden error when sending the POST request.

I have followed the tutorial at https://marketplace.zoom.us/docs/guides/auth/oauth religiously. I have even checked previous threads that talked about this error, but still couldn’t fix it

How To Reproduce (If applicable)
var fetchURL = ‘https://zoom.us/oauth/token?grant_type=authorization_code&code=dHrAQyHrTw_C1zkc5XgTO-fCRTjmsfWeg&redirect_uri=http://localhost:3000/’

const response = await fetch(fetchURL, {method:“POST”, headers{ “Authorization” : "Basic " + encoded_cred}})

–> encoded cred is encoded in base64 and contains Client_ID:Client_Secret

Please help, thank you.

[DeveloperBot]

Hey @po123

Thanks for posting on the Zoom Devforum! I am still learning, but I will try my best to help answer your question.

Checkout this related thread that may have the answer you are looking for:

Getting 403 on call OAuth token API

Description url call: https://zoom.us/oauth/token?grant_type=authorization_code&code=6VzfR5yS8m_H7AYDkARTqaVcKnotkSONA&redirect_uri=https://localhost:44399/ var plainTextBytes = System.Text.Encoding.UTF8.GetBytes(client_id + “:” + client_secret); Client.DefaultRequestHeaders.Add(“Authorization”, "Basic " + Convert.ToBase64String(plainTextBytes)); HttpResponseMessage response = await Client.PostAsync(url, null); but response.StatusCode = Forbidden 403 @tommy could you help me? @Michael_Pu…

If this thread did not help, please let us know by replying back here and someone from the Developer Relations team will get back to you shortly.

Thanks,
DeveloperBot

[po123 (Po)]

I’ve looked there, but it doesn’t help me. Please send a developer relations member. Thanks

[tommy (Tommy Gaessler)]

Hey @po123,

What content type are you setting for your request?

Try setting "Content-Type": "application/json" in the header.

Thanks,
Tommy

[po123 (Po)]

@tommy Hi, thanks for your reply. I tried that, but it’s still returning 403 error. I’m trying to use localhost as the redirect URI, is that potentially a problem?

Here are my headers:
{method:“POST”, headers:{ “Authorization”:"Basic " + encoded_cred, “Content-Type”: “application/json”}

Here is the response I received:

Thanks in advance

[tommy (Tommy Gaessler)]

Hey @po123,

I have just private messaged you.

Thanks,
Tommy