# After 1.7 to 5.5.1 Unable to authenticate user for REST request
**URL:** https://discuss.elastic.co/t/after-1-7-to-5-5-1-unable-to-authenticate-user-for-rest-request/96510
**Category:** Elasticsearch
**Created:** [August 9, 2017, 8:52pm UTC](https://discuss.elastic.co/t/after-1-7-to-5-5-1-unable-to-authenticate-user-for-rest-request/96510 "2017-08-09T20:52:23Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@JJerpseth](https://discuss.elastic.co/u/JJerpseth)
#### Post date: [August 9, 2017, 8:52pm UTC](https://discuss.elastic.co/t/after-1-7-to-5-5-1-unable-to-authenticate-user-for-rest-request/96510/1 "2017-08-09T20:52:23Z")
I am upgrading our nodes from 1.7 to 5.5.1.
I split off two master/data nodes and one index node -- I have elasticsearch running on all three and kibana running on one node.
Even the simplest request is refused
curl -XGET '[http://localhost:9200/cluster/health](http://localhost:9200/cluster/health)'
curl -XGET '[http://localhost:9200/cluster/health](http://localhost:9200/cluster/health)'
{"error":{"root\_cause":[{"type":"security\_exception","reason":"missing authentication token for REST request [/cluster/health]","header":{"WWW-Authenticate":"Basic realm="security" charset="UTF-8""}}],"type":"security\_exception","reason":"missing authentication token for REST request [/cluster/health]","header":{"WWW-Authenticate":"Basic realm="security" charset="UTF-8""}},"status":401}
Do I need to install and configure x-pack for the authentication to work?
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### Author:  [@dadoonet](https://discuss.elastic.co/u/dadoonet)
#### Post date: [August 9, 2017, 9:07pm UTC](https://discuss.elastic.co/t/after-1-7-to-5-5-1-unable-to-authenticate-user-for-rest-request/96510/2 "2017-08-09T21:07:41Z")
Which plugins did you install already?
This message seems to indicate that you installed x-pack.
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### Author:  [@JJerpseth](https://discuss.elastic.co/u/JJerpseth)
#### Post date: [August 9, 2017, 10:32pm UTC](https://discuss.elastic.co/t/after-1-7-to-5-5-1-unable-to-authenticate-user-for-rest-request/96510/3 "2017-08-09T22:32:37Z")
Thanks --that was it -- I did not recall installing x-pack and it was only installed on elasticsearch not kibana.
Once I installed it on kibana I could disable the security and proceed.
I'll enable security after I complete the upgrade.
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [September 6, 2017, 10:32pm UTC](https://discuss.elastic.co/t/after-1-7-to-5-5-1-unable-to-authenticate-user-for-rest-request/96510/4 "2017-09-06T22:32:39Z")
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