Re: sshd issues on Windows 10 version 1803

[Corinna Vinschen <corinna-cygwin at cygwin dot com>]

On Jun 25 16:08, Corinna Vinschen wrote:
> On Jun 25 14:10, Corinna Vinschen wrote:
> > On Jun 22 11:27, Hiya Z wrote:
> > > Hello,
> > > 
> > > Now that Microsoft has bundled OpenSSH for Windows in update 1803 (see
> > > https://blogs.msdn.microsoft.com/commandline/2018/03/07/windows10v1803/),
> > > here are some observations and the resulting unfortunate behavior:
> > > 
> > > -  On a clean vanilla 1803 install, even with Windows Subsystem for Linux
> > > (WSL) not installed, there exists a folder %SystemRoot%\system32\openssh
> > > that has native Windows ssh and sshd executables.
> > > 
> > > -  %SystemRoot%\system32\openssh is added to the system PATH.
> > > 
> > > -  a (manual start) service "sshd", displayname="OpenSSH SSH Server",
> > > imagepath=%SystemRoot%\system32\openssh\sshd.exe, gets created.
> > > 
> > > All of the above have the unfortunate consequence that Cygwin sshd no
> > > longer works reliably on a 1803 install. First, the service name "sshd"
> > > conflicts. This can be worked around by something like "ssh-host-config -N
> > > cygwinsshd". Even then, the Cygwin sshd does not always automatically start
> > > upon reboot. The Windows sshd is not configured/running, so there should
> > > not be a port conflict. SCM reports timeouts (waiting for cygwinsshd to
> > > respond) in the event viewer. A manual "sc start cygwinsshd" works, but
> > > again, upon the next reboot, the problem is back.
> > > 
> > > There are other permutations depending on the sequence of install. If I
> > > were to upgrade a Windows 10 1709 node with a working Cygwin sshd, it seems
> > > that the 1803 update detects an existing sshd registry key (which really is
> > > Cygwin), does not clobber the registry keys, nor does it install sshd.exe
> > > under %SystemRoot%\system32\openssh (though ssh.exe and family get
> > > installed). Even on this node, the Cygwin sshd shows the same issue of not
> > > autostarting reliably upon reboots.

Btw., I can't reproduce this problem.  Cygwin's sshd service always
starts for me at boottime as expected.

Did you check if the log file in /var/log contains any more info?


Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Maintainer                 cygwin AT cygwin DOT com
Red Hat

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