Jenkins master fails to init a session to Windows 10 with OpenSSH - jenkins

Question

I have Windows 10 with installed latest beta of OpenSSH for windows. I am trying to use it as a slave for my Jenkins. This is the content of the log on the master:
[05/14/18 22:46:45] [SSH] Opening SSH connection to 10.10.10.10:22.
[05/14/18 22:46:45] [SSH] WARNING: SSH Host Keys are not being verified. Man-in-the-middle attacks may be possible against this connection.
[05/14/18 22:46:45] [SSH] Authentication successful.
[05/14/18 22:46:45] [SSH] The remote user's environment is:
....
[05/14/18 22:46:45] [SSH] Checking java version of java
[05/14/18 22:46:45] [SSH] java -version returned 1.8.0_151.
[05/14/18 22:46:45] [SSH] Starting sftp client.
[05/14/18 22:46:45] [SSH] Copying latest slave.jar...
[05/14/18 22:46:45] [SSH] Copied 762,466 bytes.
Expanded the channel window size to 4MB
[05/14/18 22:46:45] [SSH] Starting slave process: cd "C:\jenkins" && java -jar slave.jar -jar-cache "C:\jenkins\remoting\jarCache"
<===[JENKINS REMOTING CAPACITY]===><===[JENKINS REMOTING CAPACITY]===>ERROR: Unexpected error in launching a slave. This is probably a bug in Jenkins.
hudson.remoting.RequestAbortedException
Exception in thread "main" java.io.EOFException: unexpected stream termination
ERROR: Connection terminated
at hudson.remoting.ChannelBuilder.negotiate(ChannelBuilder.java:408) at hudson.remoting.Request.call(Request.java:176)
java.io.EOFException
at java.io.ObjectInputStream$PeekInputStream.readFully(ObjectInputStream.java:2671)
at java.io.ObjectInputStream$BlockDataInputStream.readShort(ObjectInputStream.java:3146)
at java.io.ObjectInputStream.readStreamHeader(ObjectInputStream.java:858)
at java.io.ObjectInputStream.<init>(ObjectInputStream.java:354)
at hudson.remoting.ObjectInputStreamEx.<init>(ObjectInputStreamEx.java:48)
at hudson.remoting.AbstractSynchronousByteArrayCommandTransport.read(AbstractSynchronousByteArrayCommandTransport.java:35)
at hudson.remoting.SynchronousCommandTransport$ReaderThread.run(SynchronousCommandTransport.java:63)
Caused: java.io.IOException: Unexpected termination of the channel
at hudson.remoting.SynchronousCommandTransport$ReaderThread.run(SynchronousCommandTransport.java:77)
at hudson.remoting.Channel.call(Channel.java:951)
at hudson.remoting.ChannelBuilder.build(ChannelBuilder.java:353) at hudson.slaves.SlaveComputer.setChannel(SlaveComputer.java:549)
at hudson.slaves.SlaveComputer.setChannel(SlaveComputer.java:416)
at hudson.plugins.sshslaves.SSHLauncher.startSlave(SSHLauncher.java:1110)
at hudson.plugins.sshslaves.SSHLauncher.access$500(SSHLauncher.java:148)
at hudson.plugins.sshslaves.SSHLauncher$2.call(SSHLauncher.java:845)
at hudson.plugins.sshslaves.SSHLauncher$2.call(SSHLauncher.java:820)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
at hudson.remoting.Launcher.main(Launcher.java:743)
at hudson.remoting.Launcher.runWithStdinStdout(Launcher.java:691)
at hudson.remoting.Launcher.run(Launcher.java:373)[05/14/18 22:46:47] Launch failed - cleaning up connection
at hudson.remoting.Launcher.main(Launcher.java:283)
[05/14/18 22:46:47] [SSH] Connection closed.
So, ssh auth is successful, but for some reason starting the client jar fails. I am not sure what exactly I should check. Have anyone else had a struggle with Win 10 and OpenSSH?

Answer 1

Please see the comments in JENKINS-42856 and follow the instructions to configure OpenSSH
Test that you can run commands without tty by executing a command like this one
ssh USERNAME#AGENT_HOST /bin/bash -c ls