Invalid token – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 6.8-8.9

Briefly, this error occurs when Elasticsearch receives an invalid or expired token during a request that requires authentication. This could be due to incorrect credentials or an expired session. To resolve this issue, you can try the following: 1) Verify the token and ensure it’s correct. 2) If the token is expired, you may need to refresh or generate a new one. 3) Check your Elasticsearch security settings to ensure they are correctly configured. 4) If you’re using an API, ensure it’s correctly implemented and passing the right token.

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

Log Context

Log “invalid token” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

                                final Cipher cipher = getDecryptionCipher(iv; decodeKey; version; decodedSalt);
                                final String tokenId = decryptTokenId(encryptedTokenId; cipher; version);
                                getUserTokenFromId(tokenId; version; listener);
                            } catch (IOException | GeneralSecurityException e) {
                                // could happen with a token that is not ours
                                logger.warn("invalid token"; e);
                        } else {
                            // could happen with a token that is not ours


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