Prerequisites

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• Make sure you are able to repro it on the latest released version
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• Refer to Differences between Windows PowerShell 5.1 and PowerShell.

Steps to reproduce

An SSH connection hangs when the session is unexpectedly terminated. For example, if you connect to a remote Linux or Mac OS X machine and execute the 'sudo reboot' command (or otherwise disrupt SSH or the computer), the connection will hang with the message 'Connection to computername.domainname.com closed by remote host.' After this point, no further PowerShell commands will work. Ctrl+C also doesn't help in this situation.

$s = new-PSSession -HostName 'testcomputername.dom.com' -Options @{ StrictHostKeyChecking = 'no'; UserKnownHostsFile = '\\.\NUL'} -UserName 'username' -ConnectingTimeout 5000
Invoke-Command -Session $s -ScriptBlock {get-host; Start-Sleep -Seconds 1; sudo reboot

Expected behavior

Connection error and stop cmdlet

Actual behavior

Hanging

Error details

Not error, just hanging.

Environment data

Name                           Value
----                           -----
PSVersion                      7.5.3
PSEdition                      Core
GitCommitId                    7.5.3
OS                             Microsoft Windows 10.0.20348
Platform                       Win32NT
PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0…}
PSRemotingProtocolVersion      2.3
SerializationVersion           1.1.0.1
WSManStackVersion              3.0


The problem also occurs on older versions.

Visuals