# Connection failed to Elasticsearch: failed to authenticate user **URL:** \ **Category:** Elasticsearch\ **Created:** [January 23, 2018, 10:56am UTC](https://discuss.elastic.co/t/connection-failed-to-elasticsearch-failed-to-authenticate-user/116650 "2018-01-23T10:56:26Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![Rym\_Guerbi\_Michaut](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/rym_guerbi_michaut/32/25496_2.png) [@Rym\_Guerbi\_Michaut](https://discuss.elastic.co/u/Rym_Guerbi_Michaut)\ **Post date:** [January 23, 2018, 10:56am UTC](https://discuss.elastic.co/t/connection-failed-to-elasticsearch-failed-to-authenticate-user/116650/1 "2018-01-23T10:56:26Z")
Hi there, After installing x-pack for Elasticsearch 6.1 and Logstash and even for Kibana, I'm facing some new problems. I cannot get connected to Elasticsearch. The error generated: ```auto [2018-01-23T11:46:54,606][INFO][o.e.x.s.a.AuthenticationService] [uha1hg-] Authentication of [elastic] was terminated by realm [reserved] - failed to authenticate user [elastic] ``` I tried to enter the password using this command: ```auto curl -u elastic -XGET 'http://localhost:9200/_cat/health?v' ``` and it generates a `connection refused` error. PS: I'm sure of the password May someone helps, please? Thank's in advance. ---
**Author:** ![Fram\_Souza](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/fram_souza/32/24833_2.png) [@Fram\_Souza](https://discuss.elastic.co/u/Fram_Souza)\ **Post date:** [January 23, 2018, 11:11am UTC](https://discuss.elastic.co/t/connection-failed-to-elasticsearch-failed-to-authenticate-user/116650/2 "2018-01-23T11:11:55Z")
Hi @Rym_Guerbi_Michaut you restarted all nodes of the cluster after install x-pack ? ---
**Author:** ![dadoonet](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dadoonet/32/137187_2.png) [@dadoonet](https://discuss.elastic.co/u/dadoonet)\ **Post date:** [January 23, 2018, 11:13am UTC](https://discuss.elastic.co/t/connection-failed-to-elasticsearch-failed-to-authenticate-user/116650/3 "2018-01-23T11:13:28Z")
I moved your question to #x-pack ---
**Author:** ![TimV](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/timv/32/13162_2.png) [@TimV](https://discuss.elastic.co/u/TimV)\ **Post date:** [January 23, 2018, 11:38am UTC](https://discuss.elastic.co/t/connection-failed-to-elasticsearch-failed-to-authenticate-user/116650/4 "2018-01-23T11:38:13Z")
> [@Rym\_Guerbi\_Michaut](#): > > it generates a connection refused error. The mostly likely cause of that error message would be that ES isn't listening on `localhost:9200` The reasons for that might be: 1. Your ES node wasn't running when you tried that command 2. You're listening on a non-standard port (have you configured `http.port` ?) 3. You're listening on a external IP rather than "localhost" (have you configured `network.host` ?) 4. You turned off the HTTP interface (have you configured `http.enabled` ?) ---
**Author:** ![Rym\_Guerbi\_Michaut](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/rym_guerbi_michaut/32/25496_2.png) [@Rym\_Guerbi\_Michaut](https://discuss.elastic.co/u/Rym_Guerbi_Michaut)\ **Post date:** [January 23, 2018, 12:35pm UTC](https://discuss.elastic.co/t/connection-failed-to-elasticsearch-failed-to-authenticate-user/116650/5 "2018-01-23T12:35:00Z")
> [@TimV](#): > > The mostly likely cause of that error message would be that ES isn't listening on localhost:9200 > > The reasons for that might be: > > Your ES node wasn't running when you tried that command > You're listening on a non-standard port (have you configured http.port ?) > You're listening on a external IP rather than "localhost" (have you configured network.host ?) > You turned off the HTTP interface (have you configured http.enabled ?) Hi Tim, ES seems to be actually listening on localhost:9200 ![screenshot](https://us1.discourse-cdn.com/elastic/original/3X/f/f/ff0e15eb6c74c073c7b93dc509c4a7cd9393ca26.png) Hi Fram, No, I didn't close the nodes, as I thought that whenever we turn down ES, all the nodes are closed automatically, no? ---
**Author:** ![Fram\_Souza](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/fram_souza/32/24833_2.png) [@Fram\_Souza](https://discuss.elastic.co/u/Fram_Souza)\ **Post date:** [January 23, 2018, 12:37pm UTC](https://discuss.elastic.co/t/connection-failed-to-elasticsearch-failed-to-authenticate-user/116650/6 "2018-01-23T12:37:08Z")
You need restart all nodes after install and configure x-pack. ---
**Author:** ![Rym\_Guerbi\_Michaut](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/rym_guerbi_michaut/32/25496_2.png) [@Rym\_Guerbi\_Michaut](https://discuss.elastic.co/u/Rym_Guerbi_Michaut)\ **Post date:** [January 23, 2018, 3:12pm UTC](https://discuss.elastic.co/t/connection-failed-to-elasticsearch-failed-to-authenticate-user/116650/7 "2018-01-23T15:12:29Z")
Thank's for your help @Fram_Souza, I've uninstalled x-pack, sounds too complicated for me for now... I may install it later, once I would have a better understanding of ELK 🙂 ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [February 20, 2018, 3:12pm UTC](https://discuss.elastic.co/t/connection-failed-to-elasticsearch-failed-to-authenticate-user/116650/8 "2018-02-20T15:12:35Z")
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