# Install Basic License Error ES 2.2

**URL:** <https://discuss.elastic.co/t/install-basic-license-error-es-2-2/41743>\
**Category:** Elasticsearch\
**Tags:** elastic-stack-monitoring\
**Created:** [February 15, 2016, 7:06am UTC](https://discuss.elastic.co/t/install-basic-license-error-es-2-2/41743 "2016-02-15T07:06:06Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![mvenkat\_in](https://avatars.discourse-cdn.com/v4/letter/m/58f4c7/32.png) [@mvenkat\_in](https://discuss.elastic.co/u/mvenkat_in)\
**Post date:** [February 15, 2016, 7:06am UTC](https://discuss.elastic.co/t/install-basic-license-error-es-2-2/41743/1 "2016-02-15T07:06:06Z")

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I have just upgraded to ES 2.2 and installed Marvel 2.2  
However I am unable to install the basic license and I am receiving an error.  
I am not able to get the issue statement.. I could install the license with ES 2.1 earlier.  
Pls help

curl -XPUT [http://10.0.148.65:9200/\_license?acknowledge=true](http://10.0.148.65:9200/_license?acknowledge=true) -d @venkatesh\_feb16.json

{"error":{"root\_cause":[{"type":"invalid\_index\_name\_exception","reason":"Invalid index name [_license], must not start with '_'","index":"\_license"}],"type":"invalid\_index\_name\_exception","reason":"Invalid index name [_license], must not start with '_'","index":"\_license"},"status":400}[elkadm@jkmmsyslogsvr software]$

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**Author:** ![skearns](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/skearns/32/125945_2.png) [@skearns](https://discuss.elastic.co/u/skearns)\
**Post date:** [February 16, 2016, 1:21am UTC](https://discuss.elastic.co/t/install-basic-license-error-es-2-2/41743/2 "2016-02-16T01:21:45Z")

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Hi Venkatesh,

That error implies that the license plugin isn't installed. Did you restart your Elasticsearch node(s) after installing the Marvel and License plugins?

Thanks,  
Steve

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<div class="post-metadata">

**Author:** ![mvenkat\_in](https://avatars.discourse-cdn.com/v4/letter/m/58f4c7/32.png) [@mvenkat\_in](https://discuss.elastic.co/u/mvenkat_in)\
**Post date:** [February 16, 2016, 7:50am UTC](https://discuss.elastic.co/t/install-basic-license-error-es-2-2/41743/3 "2016-02-16T07:50:23Z")

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Hi Steve  
Yes. It is installed.

 ![](https://us1.discourse-cdn.com/elastic/original/2X/2/216975ff1194bf6b335f1d506d3e9e7838e3b143.png)

![](https://us1.discourse-cdn.com/elastic/original/2X/e/e8d25193b37d70f22554f382804c4aab604c055f.png)

Not able to understand where is the issue

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**Author:** ![pickypg](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/pickypg/32/62409_2.png) [@pickypg](https://discuss.elastic.co/u/pickypg)\
**Post date:** [February 16, 2016, 9:08am UTC](https://discuss.elastic.co/t/install-basic-license-error-es-2-2/41743/4 "2016-02-16T09:08:26Z")

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Hi Venkatesh,

There are two sides to Elasticsearch Java plugins that you need to consider:

1. Are they installed.
2. Are they running.

Installing is only the first step to ensuring that the node is actually using the plugin. Because Java plugins (aka, not `_site` plugins) actually add code to Elasticsearch, they cannot be dynamically added to a running instance of Elasticsearch. As a result, the only way to run those newly installed plugins is to restart the node.

To verify that the node has been restarted with those plugins installed, it's as simple as running

```auto
$ curl -XGET localhost:9200/_cat/plugins?v

```

If you do not see the plugin listed next to every node here, then it's not installed or running correctly.

Hope that helps,  
Chris

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<div class="post-metadata">

**Author:** ![mvenkat\_in](https://avatars.discourse-cdn.com/v4/letter/m/58f4c7/32.png) [@mvenkat\_in](https://discuss.elastic.co/u/mvenkat_in)\
**Post date:** [February 16, 2016, 11:19am UTC](https://discuss.elastic.co/t/install-basic-license-error-es-2-2/41743/5 "2016-02-16T11:19:47Z")

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Thanks Steve. Your suggestions/steps helped to resolve. Again a new learning for me 🙂

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<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [July 6, 2017, 1:45pm UTC](https://discuss.elastic.co/t/install-basic-license-error-es-2-2/41743/6 "2017-07-06T13:45:16Z")

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