# UnknownHostException while installing license plugin windows **URL:** \ **Category:** Elasticsearch\ **Tags:** license\ **Created:** [December 4, 2018, 7:28am UTC](https://discuss.elastic.co/t/unknownhostexception-while-installing-license-plugin-windows/159303 "2018-12-04T07:28:12Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![Dhiral\_Kaniya](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dhiral_kaniya/32/44525_2.png) [@Dhiral\_Kaniya](https://discuss.elastic.co/u/Dhiral_Kaniya)\ **Post date:** [December 4, 2018, 7:28am UTC](https://discuss.elastic.co/t/unknownhostexception-while-installing-license-plugin-windows/159303/1 "2018-12-04T07:28:13Z")
Hi Team, I have installed ELK stack on windows server 2016 with metricbeats. Now I want to install watcher for configuring some alert on a specific scenario. I have gone through with [watcher link](https://www.elastic.co/downloads/watcher). I came to know that i need to install license and watcher plugin so i download license-2.4.6.zip and watcher-2.4.6.zip from [this link](https://www.elastic.co/guide/en/watcher/watcher-1.0/installing-watcher.html). I tried to execute a command to install the elastic-search plugin as below. `bin\elasticsearch-plugin install file://C:/Dhiral/license-2.4.6.zip` Here, I didn't get success to install plugin successfully instead I got some unknownHostException. Error Trace :- C:\Dhiral\elasticsearch-6.5.1\elasticsearch-6.5.1\>bin\elasticsearch-plugin insta ll file://C:/Dhiral/license-2.4.6.zip -\> Downloading file://C:/Dhiral/license-2.4.6.zip Exception in thread "main" java.net.UnknownHostException: C at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java :184) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.Socket.connect(Socket.java:589) at sun.net.ftp.impl.FtpClient.doConnect(FtpClient.java:962) at sun.net.ftp.impl.FtpClient.tryConnect(FtpClient.java:924) at sun.net.ftp.impl.FtpClient.connect(FtpClient.java:1019) at sun.net.ftp.impl.FtpClient.connect(FtpClient.java:1005) at sun.net.www.protocol.ftp.FtpURLConnection.connect(FtpURLConnection.ja va:294) at sun.net.www.protocol.ftp.FtpURLConnection.getInputStream(FtpURLConnec tion.java:400) at org.elasticsearch.plugins.InstallPluginCommand.downloadZip(InstallPlu ginCommand.java:380) at org.elasticsearch.plugins.InstallPluginCommand.download(InstallPlugin Command.java:278) at org.elasticsearch.plugins.InstallPluginCommand.execute(InstallPluginC ommand.java:229) at org.elasticsearch.plugins.InstallPluginCommand.execute(InstallPluginC ommand.java:216) at org.elasticsearch.cli.EnvironmentAwareCommand.execute(EnvironmentAwar eCommand.java:86) at org.elasticsearch.cli.Command.mainWithoutErrorHandling(Command.java:1 24) at org.elasticsearch.cli.MultiCommand.execute(MultiCommand.java:77) at org.elasticsearch.cli.Command.mainWithoutErrorHandling(Command.java:1 24) at org.elasticsearch.cli.Command.main(Command.java:90) at org.elasticsearch.plugins.PluginCli.main(PluginCli.java:47) Can anyone help in that or suggest right way to install this two plugin(s). ---
**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\ **Post date:** [December 4, 2018, 8:44am UTC](https://discuss.elastic.co/t/unknownhostexception-while-installing-license-plugin-windows/159303/2 "2018-12-04T08:44:38Z")
Is there a reason you are using such an old version? 6.5.2 is the latest, 2.X is no longer supported. ---
**Author:** ![Dhiral\_Kaniya](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dhiral_kaniya/32/44525_2.png) [@Dhiral\_Kaniya](https://discuss.elastic.co/u/Dhiral_Kaniya)\ **Post date:** [December 4, 2018, 8:50am UTC](https://discuss.elastic.co/t/unknownhostexception-while-installing-license-plugin-windows/159303/3 "2018-12-04T08:50:20Z")
@warkolm I assume the [this](https://www.elastic.co/guide/en/watcher/watcher-1.0/installing-watcher.html) from where I download is latest release of license zip to me. if not then would you please provide resource link where I can download the latest release of License and watcher.? ---
**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\ **Post date:** [December 4, 2018, 8:52am UTC](https://discuss.elastic.co/t/unknownhostexception-while-installing-license-plugin-windows/159303/4 "2018-12-04T08:52:51Z")
If you install 6.5.1 then it's all bundled in. ---
**Author:** ![Dhiral\_Kaniya](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dhiral_kaniya/32/44525_2.png) [@Dhiral\_Kaniya](https://discuss.elastic.co/u/Dhiral_Kaniya)\ **Post date:** [December 4, 2018, 9:00am UTC](https://discuss.elastic.co/t/unknownhostexception-while-installing-license-plugin-windows/159303/5 "2018-12-04T09:00:56Z")
@warkolm I installed elasticsearch-6.5.1 but I didn't get any license.x-x-x.zip or watcher.x-x-x.zip. Downloaded elastic-search link :- [elastic-search downloaded link](https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-6.5.1.zip) I checked the following folders and i didn't get any license.x.x.x.zip or watcher.x.x.x.zip. -/plugin -/bin -/bin/x-pack/ -/lib/ -/lib/tools/ -/lib/tools/plugin-cli ---
**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\ **Post date:** [December 4, 2018, 9:01am UTC](https://discuss.elastic.co/t/unknownhostexception-while-installing-license-plugin-windows/159303/6 "2018-12-04T09:01:20Z")
As I mentioned, they are bundled in there automatically, so you don't need to install them. ---
**Author:** ![Dhiral\_Kaniya](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dhiral_kaniya/32/44525_2.png) [@Dhiral\_Kaniya](https://discuss.elastic.co/u/Dhiral_Kaniya)\ **Post date:** [December 4, 2018, 9:11am UTC](https://discuss.elastic.co/t/unknownhostexception-while-installing-license-plugin-windows/159303/7 "2018-12-04T09:11:57Z")
Hi @warkolm I was following some old documentation for configuring email, alert and watcher in elasticsearch. Thanks for your quick replies. Best, Dhiral Kaniya. ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [January 1, 2019, 9:12am UTC](https://discuss.elastic.co/t/unknownhostexception-while-installing-license-plugin-windows/159303/8 "2019-01-01T09:12:06Z")
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