# Offline plugin installation problem

**URL:** <https://discuss.elastic.co/t/offline-plugin-installation-problem/81099>\
**Category:** Logstash\
**Created:** [April 4, 2017, 8:51am UTC](https://discuss.elastic.co/t/offline-plugin-installation-problem/81099 "2017-04-04T08:51:42Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![mevbas](https://avatars.discourse-cdn.com/v4/letter/m/a5b964/32.png) [@mevbas](https://discuss.elastic.co/u/mevbas)\
**Post date:** [April 4, 2017, 8:51am UTC](https://discuss.elastic.co/t/offline-plugin-installation-problem/81099/1 "2017-04-04T08:51:42Z")

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Hi,  
I created logstash-offline-plugins zip file for email output plugin with Logstash 5.3.0

Zip file contains  
-logstash folder  
--dependencies  
---mail-2.6.4.gem  
---mime-types-2.6.2.gem  
--logstash-output-email-4.0.3.gem

When I try to install it offline server, I'm getting this error message  
"Could not find gem 'logstash-output-email (= 4.0.3) java' in any of the gem sources listed in your Gemfile or installed on this machine."

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**Author:** ![pierhugues](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/pierhugues/32/48383_2.png) [@pierhugues](https://discuss.elastic.co/u/pierhugues)\
**Post date:** [April 7, 2017, 1:16pm UTC](https://discuss.elastic.co/t/offline-plugin-installation-problem/81099/2 "2017-04-07T13:16:59Z")

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Hello @mevbas, did you use the `prepare-offline-pack` subcommand to generate the zip?

Using Logstash 5.3.0, I was able to do the following:

- install the logstash-output-email
- bin/logstash-plugin prepare-offline-pack logstash-output-email
- turn off internet
- bin/logstash-plugin install file:///tmp/logstash-offline-plugins-5.3.0.zip

```auto
✘ph@sashimi~/es/stable_releases/logstash-5.3.0 bin/logstash-plugin list --verbose email ⏎
logstash-output-email (4.0.3)

```

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [May 5, 2017, 1:28pm UTC](https://discuss.elastic.co/t/offline-plugin-installation-problem/81099/3 "2017-05-05T13:28:56Z")

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