# ML with elasticsearch 5.5.2
**URL:** https://discuss.elastic.co/t/ml-with-elasticsearch-5-5-2/100866
**Category:** Elasticsearch
**Tags:** elastic-stack-machine-learning
**Created:** [September 18, 2017, 12:24pm UTC](https://discuss.elastic.co/t/ml-with-elasticsearch-5-5-2/100866 "2017-09-18T12:24:35Z")
**Posts on this page:** 6
**Page:** 1
### Author:  [@Sarah](https://discuss.elastic.co/u/Sarah)
#### Post date: [September 18, 2017, 12:24pm UTC](https://discuss.elastic.co/t/ml-with-elasticsearch-5-5-2/100866/1 "2017-09-18T12:24:36Z")
Hi,
We are trying to install x-pack for versions 5.5.1, 5.5.2 and 5.6.0 of Elasticsearch.
But the same problem occurred:
org.elasticsearch.bootstrap.StartupException: ElasticsearchException[Failed to create native process factories for Machine Learning]; nested: FileNotFoundException[\.\pipe\controller\_log\_8580 (Le fichier spécifié est introuvable)];
Can you tell me how to fix this problem please ?
Thank you,
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### Author:  [@richcollier](https://discuss.elastic.co/u/richcollier)
#### Post date: [September 18, 2017, 1:26pm UTC](https://discuss.elastic.co/t/ml-with-elasticsearch-5-5-2/100866/2 "2017-09-18T13:26:54Z")
Similar to [Failed to create native process factories for Machine Learning](https://discuss.elastic.co/t/failed-to-create-native-process-factories-for-machine-learning/98798/3). Can follow progress there as well.
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### Author:  [@richcollier](https://discuss.elastic.co/u/richcollier)
#### Post date: [September 18, 2017, 1:58pm UTC](https://discuss.elastic.co/t/ml-with-elasticsearch-5-5-2/100866/3 "2017-09-18T13:58:18Z")
One possibility is that non-English locales might be causing problems. Stay tuned.
In the meantime - is it possible to try on a machine with an English locale?
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### Author:  [@droberts195](https://discuss.elastic.co/u/droberts195)
#### Post date: [September 22, 2017, 1:23pm UTC](https://discuss.elastic.co/t/ml-with-elasticsearch-5-5-2/100866/4 "2017-09-22T13:23:32Z")
We have found the cause of this problem and fixed the code. The fix will be released in future patches of all versions of the stack from 5.5 upwards. At the moment I cannot confirm the exact patch versions the fix will be in, but will update this post when I know, and the fix will also be listed in the release notes.
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### Author:  [@droberts195](https://discuss.elastic.co/u/droberts195)
#### Post date: [October 4, 2017, 8:24am UTC](https://discuss.elastic.co/t/ml-with-elasticsearch-5-5-2/100866/5 "2017-10-04T08:24:30Z")
This problem is resolved in version 5.6.2.
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [November 1, 2017, 8:24am UTC](https://discuss.elastic.co/t/ml-with-elasticsearch-5-5-2/100866/6 "2017-11-01T08:24:35Z")
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