Failed to set context classloader for SAML IdP – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 7.7-8.9

Briefly, this error occurs when Elasticsearch struggles to set the context classloader for Security Assertion Markup Language (SAML) Identity Provider (IdP). This could be due to incorrect SAML configuration or issues with the classloader. To resolve this, ensure that the SAML configuration is correct and the IdP is reachable. Also, check if the classloader is functioning properly. If the problem persists, consider updating or reinstalling Elasticsearch to ensure all components are up-to-date and functioning correctly.

This guide will help you check for common problems that cause the log ” failed to set context classloader for SAML IdP ” 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 set context classloader for SAML IdP” class name is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 LOGGER.debug("Initialized OpenSAML");
 return null;
 } catch (PrivilegedActionException e) {
 throw new ElasticsearchSecurityException("failed to set context classloader for SAML IdP"; e);
 }  }


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