# java.io.IOException: Agent version 4.13 or newer is required

**URL:** <https://community.jenkins.io/t/java-io-ioexception-agent-version-4-13-or-newer-is-required/14453>\
**Category:** Using Jenkins\
**Tags:** question, pipeline\
**Created:** [April 22, 2024, 5:34am UTC](https://community.jenkins.io/t/java-io-ioexception-agent-version-4-13-or-newer-is-required/14453 "2024-04-22T05:34:38Z")\
**Posts on this page:** 7\
**Page:** 1

<div class="post-metadata">

**Author:** ![kimkwnagil](https://dub1.discourse-cdn.com/flex013/user_avatar/community.jenkins.io/kimkwnagil/32/7139_2.png) [@kimkwnagil](https://community.jenkins.io/u/kimkwnagil)\
**Post date:** [April 22, 2024, 5:34am UTC](https://community.jenkins.io/t/java-io-ioexception-agent-version-4-13-or-newer-is-required/14453/1 "2024-04-22T05:34:39Z")

</div>

After upgrading jenkins, I keep getting the following message when connecting to the agent.

I will attach the wrapper-3.5.43.conf file as well.

Your quick response would be appreciated.

Launching a JVM…  
WrapperManager: Initializing…  
4월 22, 2024 2:26:12 오후 org.jenkinsci.remoting.engine.WorkDirManager initializeWorkDir  
정보: Using /Data/CICD/jenkins-agent-test/data/remoting as a remoting work directory  
4월 22, 2024 2:26:12 오후 org.jenkinsci.remoting.engine.WorkDirManager setupLogging  
정보: Both error and output logs will be printed to /Data/CICD/jenkins-agent-test/data/remoting  
4월 22, 2024 2:26:13 오후 hudson.remoting.jnlp.Main createEngine  
정보: Setting up agent: HIST-Linux  
4월 22, 2024 2:26:13 오후 hudson.remoting.jnlp.Main$CuiListener   
정보: Jenkins agent is running in headless mode.  
4월 22, 2024 2:26:13 오후 hudson.remoting.Engine startEngine  
정보: Using Remoting version: 4.5  
4월 22, 2024 2:26:13 오후 org.jenkinsci.remoting.engine.WorkDirManager initializeWorkDir  
정보: Using /Data/CICD/jenkins-agent-test/data/remoting as a remoting work directory  
4월 22, 2024 2:26:13 오후 hudson.remoting.jnlp.Main$CuiListener status  
정보: Locating server among [[https://jenkins-test.hist.co.kr/](https://jenkins-test.hist.co.kr/)]  
4월 22, 2024 2:26:13 오후 hudson.remoting.jnlp.Main$CuiListener error  
심각: Agent version 4.13 or newer is required.  
java.io.IOException: Agent version 4.13 or newer is required.  
at org.jenkinsci.remoting.engine.JnlpAgentEndpointResolver.resolve(JnlpAgentEndpointResolver.java:232)  
at hudson.remoting.Engine.innerRun(Engine.java:694)  
at hudson.remoting.Engine.run(Engine.java:519)

← Wrapper Stopped

# Path to JVM executable. By default it must be available in PATH.

# Can be an absolute path, for example:

#wrapper.java.command=/path/to/my/jdk/bin/java  
wrapper.java.command=/Data/CICD/build-tools/jdk/jdk11/bin/java

# 

# DO NOT EDIT THE FOLLOWING SECTIONS

# 

#\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*

# Wrapper Java

#\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*  
wrapper.java.mainclass=org.tanukisoftware.wrapper.WrapperSimpleApp  
wrapper.java.classpath.1=../../lib/agent.jar  
wrapper.java.classpath.2=../../lib/wrapper-3.5.43.jar  
wrapper.java.library.path.1=./lib

# Java Additional Parameters

wrapper.java.additional.1=-Djava.io.tmpdir=../../tmp  
wrapper.java.additional.2=-Dfile.encoding=UTF8

# Application parameters. Add parameters as needed starting from 1

wrapper.app.parameter.1=hudson.remoting.Launcher  
wrapper.app.parameter.2=-jnlpUrl=[https://jenkins-test.hist.co.kr/computer/HIST-Linux/slave-agent.jnlp](https://jenkins-test.hist.co.kr/computer/HIST-Linux/slave-agent.jnlp)  
wrapper.app.parameter.3=-workDir=/Data/CICD/jenkins-agent-test/data  
wrapper.app.parameter.4=-failIfWorkDirIsMissing  
wrapper.app.parameter.5=-secret=2220f73623238fc87fa9622fb1682628eb9b4822b9521ef873931557ec3d50dc  
wrapper.ping.timeout=300  
wrapper.jvm\_exit.timeout=60

#wrapper.java.initmemory=1g  
#wrapper.java.maxmemory=16g

#\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*

# Wrapper Logs

#\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*

wrapper.console.format=PM  
wrapper.console.loglevel=INFO  
wrapper.logfile=../../logs/jenkins-agent.log  
wrapper.logfile.format=M  
wrapper.logfile.loglevel=INFO

## Jenkins: 2.440.3 OS: Linux - 6.1.82-99.168.amzn2023.x86\_64 Java: 17.0.10 - [Amazon.com](http://Amazon.com) Inc. (OpenJDK 64-Bit Server VM)

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zentimestamp:4.2

---

<div class="post-metadata">

**Author:** ![krachynski](https://dub1.discourse-cdn.com/flex013/user_avatar/community.jenkins.io/krachynski/32/2674_2.png) [@krachynski](https://community.jenkins.io/u/krachynski)\
**Post date:** [April 22, 2024, 2:54pm UTC](https://community.jenkins.io/t/java-io-ioexception-agent-version-4-13-or-newer-is-required/14453/2 "2024-04-22T14:54:21Z")

</div>

Well, it’s kind of difficult to offer more information than “Update your agent”. Jenkins has already told you what you need to do.

Now, it sounds like you have a static agent. Depending on how you installed that in the first place, you will have different steps to upgrading that agent. Ephemeral agents are easy because they self update.

---

<div class="post-metadata">

**Author:** ![kimkwnagil](https://dub1.discourse-cdn.com/flex013/user_avatar/community.jenkins.io/kimkwnagil/32/7139_2.png) [@kimkwnagil](https://community.jenkins.io/u/kimkwnagil)\
**Post date:** [April 22, 2024, 11:38pm UTC](https://community.jenkins.io/t/java-io-ioexception-agent-version-4-13-or-newer-is-required/14453/3 "2024-04-22T23:38:36Z")

</div>

I don’t understand, can you tell me more about the update and how to do it?

Any references would be appreciated.

---

<div class="post-metadata">

**Author:** ![kimkwnagil](https://dub1.discourse-cdn.com/flex013/user_avatar/community.jenkins.io/kimkwnagil/32/7139_2.png) [@kimkwnagil](https://community.jenkins.io/u/kimkwnagil)\
**Post date:** [April 23, 2024, 1:11am UTC](https://community.jenkins.io/t/java-io-ioexception-agent-version-4-13-or-newer-is-required/14453/4 "2024-04-23T01:11:29Z")

</div>

Apr 12, 2024 5:21:42 PM hudson.remoting.Engine startEngine  
INFO: Using Remoting version: 3206.vb\_15dcf73f6a\_9

To add to that, it’s constantly connecting to version 3206.vb\_15dcf73f6a\_9…

The problem is that the newer version is not connecting.

---

<div class="post-metadata">

**Author:** ![krachynski](https://dub1.discourse-cdn.com/flex013/user_avatar/community.jenkins.io/krachynski/32/2674_2.png) [@krachynski](https://community.jenkins.io/u/krachynski)\
**Post date:** [April 23, 2024, 3:57pm UTC](https://community.jenkins.io/t/java-io-ioexception-agent-version-4-13-or-newer-is-required/14453/5 "2024-04-23T15:57:43Z")

</div>

are you using a docker configuration? More details on just how your agent is set up already will give hints on which documentation makes the most sense for you.

---

<div class="post-metadata">

**Author:** ![kimkwnagil](https://dub1.discourse-cdn.com/flex013/user_avatar/community.jenkins.io/kimkwnagil/32/7139_2.png) [@kimkwnagil](https://community.jenkins.io/u/kimkwnagil)\
**Post date:** [April 23, 2024, 11:33pm UTC](https://community.jenkins.io/t/java-io-ioexception-agent-version-4-13-or-newer-is-required/14453/6 "2024-04-23T23:33:20Z")

</div>

Don’t use Docker.

INFO: Using Remoting version: 4.5  
Apr 23, 2024 5:18:52 PM org.jenkinsci.remoting.engine.WorkDirManager initializeWorkDir  
INFO: Using /data/CICD/jenkins-agent/data/remoting as a remoting work directory  
Apr 23, 2024 5:18:52 PM hudson.remoting.jnlp.Main$CuiListener status  
INFO: Locating server among [[https://jenkins-test.hist.co.kr/](https://jenkins-test.hist.co.kr/)]  
Apr 23, 2024 5:18:52 PM hudson.remoting.jnlp.Main$CuiListener error  
SEVERE: [https://jenkins-test.hist.co.kr/tcpSlaveAgentListener/](https://jenkins-test.hist.co.kr/tcpSlaveAgentListener/) is invalid: 404 Not Found  
java.io.IOException: [https://jenkins-test.hist.co.kr/tcpSlaveAgentListener/](https://jenkins-test.hist.co.kr/tcpSlaveAgentListener/) is invalid: 404 Not Found  
at org.jenkinsci.remoting.engine.JnlpAgentEndpointResolver.resolve(JnlpAgentEndpointResolver.java:222)  
at hudson.remoting.Engine.innerRun(Engine.java:694)  
at hudson.remoting.Engine.run(Engine.java:519)

---

<div class="post-metadata">

**Author:** ![kimkwnagil](https://dub1.discourse-cdn.com/flex013/user_avatar/community.jenkins.io/kimkwnagil/32/7139_2.png) [@kimkwnagil](https://community.jenkins.io/u/kimkwnagil)\
**Post date:** [April 24, 2024, 5:16am UTC](https://community.jenkins.io/t/java-io-ioexception-agent-version-4-13-or-newer-is-required/14453/7 "2024-04-24T05:16:55Z")

</div>

Apr 24, 2024 2:15:31 PM hudson.remoting.Launcher$CuiListener status  
INFO: Locating server among [[https://jenkins-test.hist.co.kr/](https://jenkins-test.hist.co.kr/)]  
Apr 24, 2024 2:15:31 PM org.jenkinsci.remoting.engine.JnlpAgentEndpointResolver resolve  
INFO: Remoting server accepts the following protocols: [JNLP4-connect, Ping]  
Apr 24, 2024 2:15:31 PM hudson.remoting.Launcher$CuiListener status  
INFO: Agent discovery successful  
Agent address: 10.170.104.21  
Agent port: 50000  
Identity: d9:b7:10:5f:67:c1:fa:10:c7:91:1d:e1:73:85:e6:e3  
Apr 24, 2024 2:15:31 PM hudson.remoting.Launcher$CuiListener status  
INFO: Handshaking  
Apr 24, 2024 2:15:31 PM hudson.remoting.Launcher$CuiListener status  
INFO: Connecting to 10.170.104.21:50000  
Apr 24, 2024 2:15:31 PM hudson.remoting.Launcher$CuiListener status  
INFO: Server reports protocol JNLP4-connect-proxy not supported, skipping  
Apr 24, 2024 2:15:31 PM hudson.remoting.Launcher$CuiListener status  
INFO: Trying protocol: JNLP4-connect  
Apr 24, 2024 2:15:31 PM org.jenkinsci.remoting.protocol.impl.BIONetworkLayer$Reader run  
INFO: Waiting for ProtocolStack to start.  
Apr 24, 2024 2:15:31 PM hudson.remoting.Launcher$CuiListener status  
INFO: Remote identity confirmed: d9:b7:10:5f:67:c1:fa:10:c7:91:1d:e1:73:85:e6:e3  
Apr 24, 2024 2:15:31 PM org.jenkinsci.remoting.protocol.impl.ConnectionHeadersFilterLayer onRecv  
INFO: [JNLP4-connect connection to ip-10-170-104-21.ap-northeast-2.compute.internal/10.170.104.21:50000] Local headers refused by remote: Authorization failure  
Apr 24, 2024 2:15:31 PM hudson.remoting.Launcher$CuiListener status  
INFO: Protocol JNLP4-connect encountered an unexpected exception  
java.util.concurrent.ExecutionException: org.jenkinsci.remoting.protocol.impl.ConnectionRefusalException: Authorization failure  
at org.jenkinsci.remoting.util.SettableFuture.get(SettableFuture.java:223)  
at hudson.remoting.Engine.innerRun(Engine.java:870)  
at hudson.remoting.Engine.run(Engine.java:563)  
Caused by: org.jenkinsci.remoting.protocol.impl.ConnectionRefusalException: Authorization failure  
at org.jenkinsci.remoting.protocol.impl.ConnectionHeadersFilterLayer.newAbortCause(ConnectionHeadersFilterLayer.java:380)  
at org.jenkinsci.remoting.protocol.impl.ConnectionHeadersFilterLayer.onRecvClosed(ConnectionHeadersFilterLayer.java:435)  
at org.jenkinsci.remoting.protocol.ProtocolStack$Ptr.onRecvClosed(ProtocolStack.java:825)  
at org.jenkinsci.remoting.protocol.FilterLayer.onRecvClosed(FilterLayer.java:289)  
at org.jenkinsci.remoting.protocol.impl.SSLEngineFilterLayer.onRecvClosed(SSLEngineFilterLayer.java:168)  
at org.jenkinsci.remoting.protocol.ProtocolStack$Ptr.onRecvClosed(ProtocolStack.java:825)  
at org.jenkinsci.remoting.protocol.NetworkLayer.onRecvClosed(NetworkLayer.java:155)  
at org.jenkinsci.remoting.protocol.impl.BIONetworkLayer.access$700(BIONetworkLayer.java:51)  
at org.jenkinsci.remoting.protocol.impl.BIONetworkLayer$Reader.run(BIONetworkLayer.java:257)  
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)  
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)  
at hudson.remoting.Engine$1.lambda$newThread$0(Engine.java:137)  
at java.base/java.lang.Thread.run(Thread.java:829)  
Suppressed: java.nio.channels.ClosedChannelException  
… 7 more