Authentication using apikey failed – How to solve related issues

Opster Team

Jan-20, Version: 1.7-8.0

Before you begin reading this guide, we recommend you run Elasticsearch Error Check-Up which can resolve issues that cause many errors.

This guide will help you check for common problems that cause the log ” Authentication using apikey failed ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin.

Advanced users might want to skip right to the common problems section in each concept or try running the Check-Up to analyze Elasticsearch configuration and help resolve this error.

Log Context

Log “Authentication using apikey failed – {}” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

                             : Exceptions.authenticationError(authResult.getMessage());
                    } else {
                        if (authResult.getMessage() != null) {
                            if (authResult.getException() != null) {
                                logger.warn(new ParameterizedMessage("Authentication using apikey failed - {}"; authResult.getMessage());
                            } else {
                                logger.warn("Authentication using apikey failed - {}"; authResult.getMessage());


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