403 error on token endpoint

I’m trying to authenticate via a a chrome extension. Using identity.launchWebAuthFlow i can correctly get a code but when i try to exchange this code for an access_token and a refresh_token, i get a 403 error.
The url is correctly put in the permissions, i use a fetch to POST to the token endpoint, the data is correctly form encoded.

Hey @Illidev, Welcome to the Auth0 Community!

What type of application have you configured on Auth0 Side? Regular Webapp or SPA?
If you can DM me your HAR file to have a look will be great!


I managed to do it my problem is solved thank you. I had an url encoding problem in the redirect url parameter.

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Thanks Great, Thanks for letting us know!

I am also having this issue, does someone have any solution for this? kindly share your views, thanks in advance.

Can you check maybe the problem lies in what @Illidev suggested above?

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