Failed to exchange code for Id Token using Token Endpoint – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 7.1-7.15

Briefly, this error occurs when Elasticsearch fails to exchange an authorization code for an ID token during the OAuth2 authentication process. This could be due to incorrect configuration settings, network issues, or an invalid authorization code. To resolve this, ensure that the OAuth2 settings are correctly configured, check your network connectivity, and verify that the authorization code is valid and not expired. Also, ensure that the token endpoint is correctly set up and accessible.

This guide will help you check for common problems that cause the log ” Failed to exchange code for Id Token using Token Endpoint. ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin.

Log Context

Log “Failed to exchange code for Id Token using Token Endpoint.” class name is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 for (Map.Entry> entry : clientSecretJWT.toParameters().entrySet()) {
 // Both client_assertion and client_assertion_type are singleton lists
 params.add(new BasicNameValuePair(entry.getKey(); entry.getValue().get(0)));
 } else {
 tokensListener.onFailure(new ElasticsearchSecurityException("Failed to exchange code for Id Token using Token Endpoint." +
 "Expected client authentication method to be one of " + OpenIdConnectRealmSettings.CLIENT_AUTH_METHODS
 + " but was [" + rpConfig.getClientAuthenticationMethod() + "]"));
 httpPost.setEntity(new UrlEncodedFormEntity(params));


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