# Received message from unsupported version: \[2.0.0\] minimal compatible version is: \[5.0.0\]

**URL:** <https://discuss.elastic.co/t/received-message-from-unsupported-version-2-0-0-minimal-compatible-version-is-5-0-0/64708>\
**Category:** Elasticsearch\
**Created:** [November 2, 2016, 12:02pm UTC](https://discuss.elastic.co/t/received-message-from-unsupported-version-2-0-0-minimal-compatible-version-is-5-0-0/64708 "2016-11-02T12:02:34Z")\
**Posts on this page:** 7\
**Page:** 1

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**Author:** ![dawood\_abdullah](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dawood_abdullah/32/57142_2.png) [@dawood\_abdullah](https://discuss.elastic.co/u/dawood_abdullah)\
**Post date:** [November 2, 2016, 12:02pm UTC](https://discuss.elastic.co/t/received-message-from-unsupported-version-2-0-0-minimal-compatible-version-is-5-0-0/64708/1 "2016-11-02T12:02:34Z")

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When I am starting elastic server, I am continously getting the below exception:  
java.lang.IllegalStateException: Received message from unsupported version: [2.0.0] minimal compatible version is: [5.0.0]  
at org.elasticsearch.transport.TcpTransport.messageReceived(TcpTransport.java:1199) ~[elasticsearch-5.0.0.jar:5.0.0]  
at org.elasticsearch.transport.netty4.Netty4MessageChannelHandler.channelRead(Netty4MessageChannelHandler.java:74) ~[transport-netty4-5.0.0.jar:5.0.0]  
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:372) [netty-transport-4.1.5.Final.jar:4.1.5.Final]  
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:358) [netty-transport-4.1.5.Final.jar:4.1.5.Final]

what could be the problem for the above error, I do not have any 2.0.0 version nodes running in the cluster

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**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:** [November 2, 2016, 12:15pm UTC](https://discuss.elastic.co/t/received-message-from-unsupported-version-2-0-0-minimal-compatible-version-is-5-0-0/64708/2 "2016-11-02T12:15:28Z")

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You probably have a Node or a Transport client somewhere running 2.0.0 which is trying to communicate with your node which is running 5.0.0?

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**Author:** ![dawood\_abdullah](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dawood_abdullah/32/57142_2.png) [@dawood\_abdullah](https://discuss.elastic.co/u/dawood_abdullah)\
**Post date:** [November 2, 2016, 12:21pm UTC](https://discuss.elastic.co/t/received-message-from-unsupported-version-2-0-0-minimal-compatible-version-is-5-0-0/64708/3 "2016-11-02T12:21:45Z")

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Thanks David, I am sure there is no node running, I will check if there is any transport client which is running 2.0.0 and will update accordingly

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**Author:** ![dawood\_abdullah](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dawood_abdullah/32/57142_2.png) [@dawood\_abdullah](https://discuss.elastic.co/u/dawood_abdullah)\
**Post date:** [November 2, 2016, 12:34pm UTC](https://discuss.elastic.co/t/received-message-from-unsupported-version-2-0-0-minimal-compatible-version-is-5-0-0/64708/4 "2016-11-02T12:34:04Z")

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Yes David, there was one transport client which was using 2.0.0, upgrading it to 5.0.0 fixed the issue. Thanks for the quick resolution.

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**Author:** ![Blowoffvalve](https://avatars.discourse-cdn.com/v4/letter/b/b38774/32.png) [@Blowoffvalve](https://discuss.elastic.co/u/Blowoffvalve)\
**Post date:** [March 2, 2017, 11:19am UTC](https://discuss.elastic.co/t/received-message-from-unsupported-version-2-0-0-minimal-compatible-version-is-5-0-0/64708/5 "2017-03-02T11:19:25Z")

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How do i upgrade the transport client. I just installed elasticsearch and i'm not using any nodes

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**Author:** ![nlholdem](https://avatars.discourse-cdn.com/v4/letter/n/439d5e/32.png) [@nlholdem](https://discuss.elastic.co/u/nlholdem)\
**Post date:** [March 8, 2017, 3:36pm UTC](https://discuss.elastic.co/t/received-message-from-unsupported-version-2-0-0-minimal-compatible-version-is-5-0-0/64708/6 "2017-03-08T15:36:42Z")

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I'd also like an answer to this - if you find one, please let me know!

thanks

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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:** [July 5, 2017, 10:02pm UTC](https://discuss.elastic.co/t/received-message-from-unsupported-version-2-0-0-minimal-compatible-version-is-5-0-0/64708/7 "2017-07-05T22:02:27Z")

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