Failed to parse licenses expected start object – How to solve this Elasticsearch exception

Opster Team

August-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 parse the license information due to an incorrect format. It expects a JSON object but is receiving a different format. To resolve this issue, you can check the format of your license information and ensure it is a valid JSON object. Also, ensure that the license information is correctly placed in the Elasticsearch configuration. If you’re updating the license, ensure you’re using the correct API endpoint and method. Lastly, check for any syntax errors or missing brackets in your JSON object.

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 ” failed to parse licenses expected start object ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin, license.

Log Context

Log “failed to parse licenses expected start object” class name is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 // Ignore all other fields - might be created with new version
 } else {
 throw new ElasticsearchParseException("failed to parse licenses expected field");
 } else {
 throw new ElasticsearchParseException("failed to parse licenses expected start object");
 return license;


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?

Get expert answers on Elasticsearch/OpenSearch