Hi @joshua thanks for your answer.

I couldn't see an error log on the fusion auth side.

But we are using Nginx and I saw 403 error logs on that side,

/var/log/nginx/access.log: - [25/Jun/2021:12:37:24 -0400] "POST /oauth2/authorize HTTP/1.1" 403 0 "https://fusionauthcallbackurl.com/callbackmethod/"

as far as I understand Fusion Auth wants to do a redirect (for Oauth login callback), but nginx returns 403 and sometimes 404 error for this request. Do you have an opinion for this problem?

What can I do, so that Nginx doesn't block/change the redirect that fusion auth wants to do.

Hello, I added the necessary path css js settings to nginx for the Oauth path.

I use this url for login : /oauth2/authorize?client_id={client_id}&redirect_uri={redirect_uri}&response_type=code&tenantId={tenantId}

I can see the Fusion auth login page with information such as client id redirect url etc.

But when I type the username and password and press the login button,

I get 403 error. Probably something is missing in my ngnix settings.

Do you have any idea about it?

Form submit response:

So far I have checked these:

• https://fusionauth.io/blog/2020/03/31/how-to-securely-implement-oauth-angular/

• https://oauth2-proxy.github.io/oauth2-proxy/docs/configuration/oauth_provider

• https://github.com/FusionAuth/fusionauth-contrib/tree/master/Reverse Proxy Configurations

Any help in this regard will be appreciated.