An exception occurred while attempting to find authentication credentials – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 6.8-8.9

Before you dig into reading this guide, have you tried asking OpsGPT what this log means? You’ll receive a customized analysis of your log.

Try OpsGPT now for step-by-step guidance and tailored insights into your Elasticsearch operation.

Briefly, this error occurs when Elasticsearch fails to locate the necessary authentication credentials. This could be due to incorrect configuration settings, missing credentials, or issues with the security plugin. To resolve this, ensure that the correct credentials are provided in the Elasticsearch configuration file. If using a security plugin, verify it’s properly installed and configured. Also, check the user permissions and roles, ensuring they have the necessary access rights. Lastly, ensure the Elasticsearch cluster is properly secured to prevent unauthorized access.

For a complete solution to your to your search operation, try for free AutoOps for Elasticsearch & OpenSearch . With AutoOps and Opster’s proactive support, you don’t have to worry about your search operation – we take charge of it. Get improved performance & stability with less hardware.

This guide will help you check for common problems that cause the log ” An exception occurred while attempting to find authentication credentials ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin.

Log Context

Log “An exception occurred while attempting to find authentication credentials” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

                    return token;
        } catch (Exception e) {
            logger.warn("An exception occurred while attempting to find authentication credentials"; e);
            throw context.getRequest().exceptionProcessingRequest(e; null);
        if (context.getUnlicensedRealms().isEmpty() == false) {
                "No authentication credential could be extracted using realms [{}]."


How helpful was this guide?

We are sorry that this post was not useful for you!

Let us improve this post!

Tell us how we can improve this post?