topic Re: Why is refreshing access token returning "invalid client"? in Spotify for Developers

Why is refreshing access token returning "invalid client"?

Jingojango — Sun, 03 Oct 2021 16:41:26 GMT

Plan

Premium

Country

Device

Edge browser

Operating System

windows 10

My Question or Issue

I always receive this error when I run my fetch call to refresh my access_token: {error: 'invalid_client', error_description: 'Invalid client'}

I have checked my client id and secret and the refresh token being passed in is correct. I feel something must be incorrect about my refreshAccessToken() fetch function but I'm not sure what is wrong?

Re: Why is refreshing access token returning "invalid client"?

ohej — Mon, 04 Oct 2021 12:47:46 GMT

I think you may have discovered a bug in our authorization documentation.

When you exchange the code for an access token you get a few different parameters returned - access_token, token_type, scope, expires_in and refresh_token.

From the docs:

A token that can be sent to the Spotify Accounts service in place of an authorization code. (When the access code expires, send a POST request to the Accounts service /api/token endpoint, but use this code in place of an authorization code. A new access token will be returned. A new refresh token might be returned too.)

Try sending the refresh_token as the value for the Authorization header instead and let me know if that works.

I know the docs just below this says to send base64 encoded client_id:client_secret, but at least from the PKCE flow you have to use the refresh_token instead.

Let me know how it works and we'll get the docs updated accordingly.

Re: Why is refreshing access token returning "invalid client"?

ohej — Wed, 06 Oct 2021 14:08:46 GMT

Are you using the PKCE flow or code flow?

Re: Why is refreshing access token returning "invalid client"?

Jingojango — Wed, 06 Oct 2021 15:31:52 GMT

Never mind. It was a problem with my code elsewhere. how do i close/delete my post?

Re: Why is refreshing access token returning "invalid client"?

kyds3k — Sat, 29 Oct 2022 05:43:43 GMT

Hi! What was the error in your code that was causing the problem? I'm having the same problem and my code is similar to yours.

Re: Why is refreshing access token returning "invalid client"?

Gflex39 — Mon, 17 Jul 2023 17:53:34 GMT

Did you end up fixing it?