Request is not authenticated – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 8.9-8.9

Briefly, this error occurs when a request is made to Elasticsearch without proper authentication. This could be due to missing, incorrect, or expired credentials. To resolve this issue, you can: 1) Ensure that you are providing the correct username and password in your request. 2) Check if your authentication token has expired and renew it if necessary. 3) Verify that your user has the necessary permissions to perform the requested operation. 4) If you’re using an API key for authentication, make sure it’s valid and not expired.

This guide will help you check for common problems that cause the log ” Request is not authenticated ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin, request.

Log Context

Log “Request is not authenticated” class name is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 if (authenticationThreadContext != null) {
 } else {
 // this is an unexpected internal error condition where {@code Netty4HttpHeaderValidator} does not work correctly
 throw new ElasticsearchSecurityException("Request is not authenticated");


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