обновления нашей основной установки Jenkins до последней версии LTS 2.46.3 один из ее подчиненных (32-разрядный компьютер с Windows 7) не может подключиться к главному.

Ошибка, которую мы получаем:

java -jar slave.jar -jnlpUrl https://<jenkins-name>/computer/<node-name>/slave-agent.jnlp -secret <secret-value>
Jun 22, 2017 1:19:05 PM hudson.remoting.jnlp.Main createEngine
INFO: Setting up slave: node-name
Jun 22, 2017 1:19:05 PM hudson.remoting.jnlp.Main$CuiListener <init,>
INFO: Jenkins agent is running in headless mode.
Jun 22, 2017 1:19:05 PM hudson.remoting.jnlp.Main$CuiListener status
INFO: Locating server among [https://<jenkins-name>/]
Jun 22, 2017 1:19:05 PM org.jenkinsci.remoting.engine.JnlpAgentEndpointResolver resolve
INFO: Remoting server accepts the following protocols: [JNLP3-connect, JNLP-connect, CLI2-connect, Ping, CLI-connect, JNLP4-connect, JNLP2-c
onnect]
Jun 22, 2017 1:19:05 PM hudson.remoting.jnlp.Main$CuiListener status
INFO: Agent discovery successful
  Agent address: <jenkins-name>
  Agent port:    <jenkins-port>
  Identity:      <id:en:ti:ty>
Jun 22, 2017 1:19:05 PM hudson.remoting.jnlp.Main$CuiListener status
INFO: Handshaking
Jun 22, 2017 1:19:05 PM hudson.remoting.jnlp.Main$CuiListener status
INFO: Connecting to <jenkins-name>:9150
Jun 22, 2017 1:19:05 PM hudson.remoting.jnlp.Main$CuiListener status
INFO: Trying protocol: JNLP4-connect
Jun 22, 2017 1:19:05 PM org.jenkinsci.remoting.protocol.impl.AckFilterLayer abort
WARNING: [JNLP4-connect connection to <our-proxy>/10.253.0.11:81] Incorrect acknowledgement sequence, expected 0x0003414333 got 0x4854545044
Jun 22, 2017 1:19:05 PM hudson.remoting.jnlp.Main$CuiListener status
INFO: Protocol JNLP4-connect encountered an unexpected exception
java.util.concurrent.ExecutionException: org.jenkinsci.remoting.protocol.impl.ConnectionRefusalException: Connection closed before acknowled
gement sent
        at org.jenkinsci.remoting.util.SettableFuture.get(SettableFuture.java:223)
        at hudson.remoting.Engine.innerRun(Engine.java:385)
        at hudson.remoting.Engine.run(Engine.java:287)
Caused by: org.jenkinsci.remoting.protocol.impl.ConnectionRefusalException: Connection closed before acknowledgement sent
        at org.jenkinsci.remoting.protocol.impl.AckFilterLayer.onRecvClosed(AckFilterLayer.java:280)
        at org.jenkinsci.remoting.protocol.FilterLayer.abort(FilterLayer.java:164)
        at org.jenkinsci.remoting.protocol.impl.AckFilterLayer.abort(AckFilterLayer.java:130)
        at org.jenkinsci.remoting.protocol.impl.AckFilterLayer.onRecv(AckFilterLayer.java:258)
        at org.jenkinsci.remoting.protocol.ProtocolStack$Ptr.onRecv(ProtocolStack.java:669)
        at org.jenkinsci.remoting.protocol.NetworkLayer.onRead(NetworkLayer.java:136)
        at org.jenkinsci.remoting.protocol.impl.BIONetworkLayer.access$2200(BIONetworkLayer.java:48)

Мы потратили много времени, пытаясь решить проблему. К сожалению, без успеха.

У вас есть идея, что могло вызвать проблему и как ее можно решить?