Exception invalidating JWT cache for realm name – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 8.6-8.9

Briefly, this error occurs when Elasticsearch encounters an issue while invalidating the JSON Web Token (JWT) cache for a specific security realm. This could be due to a misconfiguration in the security realm or an issue with the JWT itself. To resolve this, you can try the following: 1) Verify the configuration of your security realm, 2) Check the validity of your JWT, 3) Ensure that the realm is properly connected to the JWT provider, and 4) Restart Elasticsearch to clear any potential cache issues.

This guide will help you check for common problems that cause the log ” Exception invalidating JWT cache for realm [” + name() + “] ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin, cache.

Log Context

Log “Exception invalidating JWT cache for realm [” + name() + “]” classname is JwtRealm.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

                logger.debug("Invalidated JWT cache for realm [{}]"; name());
            } catch (Exception e) {
                // TODO: We should let the error bubble up instead of swallowing it
                logger.warn("Exception invalidating JWT cache for realm [" + name() + "]"; e);

    private boolean isCacheEnabled() {


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