[Support]: 401 Authorization Required even finished authentication

[someonewating]

OAuth2-Proxy Version

latest

Provider

azure

Current Behaviour of your Problem

Expectation: The uri '/oauth2/auth' should response 202
Issue: The URI '/oauth2/auth' is responding 401 even I finished authentication and observed cookie stored.

Configuration details or additional information

I can see my browser is storing cookie, but I don't understand why the '/oauth2/auth' always responds 401.

My oauth2 proxy configuration:

email_domains = ["*"]  # Adjust this to restrict to specific email domains, if necessary

http_address="0.0.0.0:4180"
provider = "oidc"
client_id = "**********"
client_secret = "**********"
oidc_issuer_url = "https://login.microsoftonline.com/********/v2.0"
redirect_url = "https://dns.janej.xyz:180/oauth2/callback"
reverse_proxy=true

cookie_secret = "********"  # Generate a random string
cookie_secure = true  # Set to true if using https
cookie_domains = '***'
whitelist_domains="***"

My nginx configuration:

server {
        listen [::]:180 ssl;
        server_name ***;
        ssl_certificate /etc/nginx/ssl/dns/fullchain1.pem;
        ssl_certificate_key /etc/nginx/ssl/dns/privkey1.pem;

        location / {
            auth_request /oauth2/auth;
            # error_page 401 = /oauth2/start;

            # pass information via X-User and X-Email headers to backend,
            # requires running with --set-xauthrequest flag
            auth_request_set $user   $upstream_http_x_auth_request_user;
            auth_request_set $email  $upstream_http_x_auth_request_email;
            proxy_set_header X-User  $user;
            proxy_set_header X-Email $email;

            proxy_buffers 8 16k;
            proxy_buffer_size   16k;  # Adjust the size as needed

            proxy_pass http://192.168.5.254:880/;
        }

        location = /oauth2/auth {
            proxy_pass http://oauth2_proxy_test:4180;
            proxy_set_header Host             $host;
            proxy_set_header X-Real-IP        $remote_addr;
            proxy_set_header X-Forwarded-Uri  $request_uri;
            # nginx auth_request includes headers but not body
            proxy_set_header Content-Length   "";
            proxy_pass_request_body           off;
        }
        location /oauth2/ {
            proxy_pass       http://oauth2_proxy_test:4180;
            proxy_set_header Host                    $host;
            proxy_set_header X-Real-IP               $remote_addr;
            proxy_set_header X-Auth-Request-Redirect $request_uri;
            # or, if you are handling multiple domains:
            # proxy_set_header X-Auth-Request-Redirect $scheme://$host$request_uri;
        }
        
        location = /oauth2/callback {
            proxy_pass http://192.168.5.254:880/;
            proxy_set_header Host $host;
            proxy_pass_request_body off;
            proxy_set_header Content-Length "";
        }

Thank you so much for any kind of help!

Steps To Reproduce

Access https://[domain name]/oauth2/auth, received 401 Authorization Required.

[someonewating]

Also if I access oauth2/sign_out, the result is Unauthorized as well.
But from the developer console, I can see the cookie _oauth2_proxy_csrf with content inside it.