# Plugin:elasticsearch@5.1.2 Authentication Exception
**URL:** https://discuss.elastic.co/t/plugin-elasticsearch-5-1-2-authentication-exception/72111
**Category:** Elasticsearch
**Created:** [January 19, 2017, 3:43am UTC](https://discuss.elastic.co/t/plugin-elasticsearch-5-1-2-authentication-exception/72111 "2017-01-19T03:43:10Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@antwanvanderstap](https://discuss.elastic.co/u/antwanvanderstap)
#### Post date: [January 19, 2017, 3:43am UTC](https://discuss.elastic.co/t/plugin-elasticsearch-5-1-2-authentication-exception/72111/1 "2017-01-19T03:43:10Z")
Not looking to be spoon fed a solution ... more a pointer to some kind of debugging I can perform ....
The error "plugin:elasticsearch@5.1.2 Authentication Exception" is driving me bananas and I have tried different usernames and passwords in the kibana.yml .. no dice.
_curl -u kibana XGET -v [http://localhost:9200](http://localhost:9200)_
_Enter host password for user 'kibana':_
_\* Rebuilt URL to: XGET/_
_\* Could not resolve host: XGET_
_\* Closing connection 0_
_curl: (6) Could not resolve host: XGET_
_\* Rebuilt URL to: [http://localhost:9200/](http://localhost:9200/)_
_\* Trying ::1..._
_\* Connected to localhost (::1) port 9200 (#1)_
_\* Server auth using Basic with user 'kibana'_
_\> GET / HTTP/1.1_
_\> Host: localhost:9200_
_\> Authorization: Basic a2liYW5hOmtpYmFuYXBhc3N3b3Jk_
_\> User-Agent: curl/7.47.0_
_\> Accept: /_
_\> \_
\< HTTP/1.1 200 OK
\< content-type: application/json; charset=UTF-8
\< content-length: 327
\< \_
{
\_ "name" : "suOuJav",
\_ "cluster\_name" : "elasticsearch",_
\_ "cluster\_uuid" : "NxT2zyEbQpa1lenr5eUbjw",\_
\_ "version" : {\_
\_ "number" : "5.1.2",\_
\_ "build\_hash" : "c8c4c16",\_
\_ "build\_date" : "2017-01-11T20:18:39.146Z",\_
\_ "build\_snapshot" : false,\_
\_ "lucene\_version" : "6.3.0"\_
\_ },\_
\_ "tagline" : "You Know, for Search"\_
_}_
_\* Connection #1 to host localhost left intact_
The XGET using the Kibana user is working.
Running elastic 5.1.2 with x-pack 5.1.2
Any pointers or nudges in the right direction are extremely helpful and appreciated!!!
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### Author:  [@dadoonet](https://discuss.elastic.co/u/dadoonet)
#### Post date: [January 19, 2017, 6:42am UTC](https://discuss.elastic.co/t/plugin-elasticsearch-5-1-2-authentication-exception/72111/2 "2017-01-19T06:42:15Z")
Try with a fresh new download and don't change settings.
Then open Kibana with elastic / changeme default login.
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [February 16, 2017, 6:42am UTC](https://discuss.elastic.co/t/plugin-elasticsearch-5-1-2-authentication-exception/72111/3 "2017-02-16T06:42:33Z")
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