# I get an exception after enabling transport layer security . Can someone help me here?
**URL:** https://discuss.elastic.co/t/i-get-an-exception-after-enabling-transport-layer-security-can-someone-help-me-here/250049
**Category:** Elasticsearch
**Tags:** elastic-stack-security
**Created:** [September 26, 2020, 9:50am UTC](https://discuss.elastic.co/t/i-get-an-exception-after-enabling-transport-layer-security-can-someone-help-me-here/250049 "2020-09-26T09:50:59Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@snehadarshini](https://discuss.elastic.co/u/snehadarshini)
#### Post date: [September 26, 2020, 9:51am UTC](https://discuss.elastic.co/t/i-get-an-exception-after-enabling-transport-layer-security-can-someone-help-me-here/250049/1 "2020-09-26T09:51:00Z")
```auto
[2020-09-26T05:29:15,468][WARN][o.e.t.TcpTransport] [master-2] exception caught on transport layer [Netty4TcpChannel{localAddress=/10.0.1.102:9300, remoteAddress=/10.0.1.101:34044}], closing connection
io.netty.handler.codec.DecoderException: java.io.StreamCorruptedException: invalid internal transport message format, got (16,3,3,1)
at io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:472) ~[netty-codec-4.1.35.Final.jar:4.1.35.Final]
at io.netty.handler.codec.ByteToMessageDecoder.channelInputClosed(ByteToMessageDecoder.java:405) ~[netty-codec-4.1.35.Final.jar:4.1.35.Final]
at io.netty.handler.codec.ByteToMessageDecoder.channelInputClosed(ByteToMessageDecoder.java:372) ~[netty-codec-4.1.35.Final.jar:4.1.35.Final]
at io.netty.handler.codec.ByteToMessageDecoder.channelInactive(ByteToMessageDecoder.java:355) ~[netty-codec-4.1.35.Final.jar:4.1.35.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:257) [netty-transport-4.1.35.Final.jar:4.1.35.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:243) [netty-transport-4.1.35.Final.jar:4.1.35.Final]
at io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChannelHandlerContext.java:236) [netty-transport-4.1.35.Final.jar:4.1.35.Final]
at io.netty.handler.logging.LoggingHandler.channelInactive(LoggingHandler.java:167) [netty-handler-4.1.35.Final.jar:4.1.35.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:257) [netty-transport-4.1.35.Final.jar:4.1.35.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:243) [netty-transport-4.1.35.Final.jar:4.1.35.Final]
at io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChannelHandlerContext.java:236) [netty-transport-4.1.35.Final.jar:4.1.35.Final]
at io.netty.channel.DefaultChannelPipeline$HeadContext.channelInactive(DefaultChannelPipeline.java:1403) [netty-transport-4.1.35.Final.jar:4.1.35.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:257) [netty-transport-4.1.35.Final.jar:4.1.35.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:243) [netty-transport-4.1.35.Final.jar:4.1.35.Final]
at io.netty.channel.DefaultChannelPipeline.fireChannelInactive(DefaultChannelPipeline.java:912) [netty-transport-4.1.35.Final.jar:4.1.35.Final]
at io.netty.channel.AbstractChannel$AbstractUnsafe$8.run(AbstractChannel.java:827) [netty-transport-4.1.35.Final.jar:4.1.35.Final]
at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:163) [netty-common-4.1.35.Final.jar:4.1.35.Final]
at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:405) [netty-common-4.1.35.Final.jar:4.1.35.Final]
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:500) [netty-transport-4.1.35.Final.jar:4.1.35.Final]
at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:906) [netty-common-4.1.35.Final.jar:4.1.35.Final]
at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) [netty-common-4.1.35.Final.jar:4.1.35.Final]
at java.lang.Thread.run(Thread.java:835) [?:?]
Caused by: java.io.StreamCorruptedException: invalid internal transport message format, got (16,3,3,1)
at org.elasticsearch.transport.TcpTransport.readHeaderBuffer(TcpTransport.java:745) ~[elasticsearch-7.2.1.jar:7.2.1]
at org.elasticsearch.transport.TcpTransport.readMessageLength(TcpTransport.java:731) ~[elasticsearch-7.2.1.jar:7.2.1]
at org.elasticsearch.transport.netty4.Netty4SizeHeaderFrameDecoder.decode(Netty4SizeHeaderFrameDecoder.java:40) ~[transport-netty4-client-7.2.1.jar:7.2.1]
at io.netty.handler.codec.ByteToMessageDecoder.decodeRemovalReentryProtection(ByteToMessageDecoder.java:502) ~[netty-codec-4.1.35.Final.jar:4.1.35.Final]
at io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:441) ~[netty-codec-4.1.35.Final.jar:4.1.35.Final]
... 21 more
```
I dont know what am I doing wrong here.
I have a 6 node cluster.
3 master and 3 data node.
When I restart elastic search I get this exception
---
### Author:  [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)
#### Post date: [September 26, 2020, 11:13am UTC](https://discuss.elastic.co/t/i-get-an-exception-after-enabling-transport-layer-security-can-someone-help-me-here/250049/2 "2020-09-26T11:13:45Z")
Without information about how you have configured your nodes and more details about the error it is impossible to help.
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [October 24, 2020, 11:13am UTC](https://discuss.elastic.co/t/i-get-an-exception-after-enabling-transport-layer-security-can-someone-help-me-here/250049/3 "2020-10-24T11:13:47Z")
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