Cygwin sshd does indeed break during the imaging process. The updatecygwin.vbs script runs after an image is loaded and should fix the sshd service. It recreates the group and passwd files and also regenerates the computer's SSH host keys because they are no longer valid.

Try running this command to see if it fixes sshd:
cscript.exe "C:\Documents and Settings\root\Application 

If this fixes sshd, you'll need to troubleshoot why the script didn't run automatically after the image was loaded. The sequence should be:
-image loaded
-root automatically logs in
-VCLprepare.cmd runs
-updatecygwin.vbs is called from VCLprepare.cmd

If this doesn't fix sshd, there is something wrong with the sshd setup in the 
-Log in as root
-start the Cygwin shell (C:\cygwin\Cygwin.bat)
-try running cygrunsrv.exe -S sshd

This may display an error message telling you why it couldn't be started. If this doesn't help, try running ssh-host-config. It also may tell you what needs to be corrected.


Melba Lopez wrote:
PS.  It seems as though cygwin sshd stops working after sysprep.  I tried
ssh'ing a few times after the auto_create_image.vbs scripts (from VCL to the
VM) and it seemed to worked fine.  Perhaps sysprep or one of the vcl scripts
that are run after deployment changes something?

On Fri, Apr 10, 2009 at 3:21 PM, Melba Lopez <> wrote:

During our Windows XP windows creation we had no problems configuring cywin
sshd.  I was able to ssh back and forth from VCL to the VM.
However, after deployment of the VM, cygwin sshd never starts up.  I'm able
to login to the VM and ssh into VCL.  However, VCL cannot SSH into the
windows vm and the vm cannot ssh into itself.  I get the following error:

 "ssh: Connect to host <ip> port 22: Connection Refused".

I verified that the port is open on the Windows VM.

I tried starting the cygwin sshd service, but I get the following message:

"The CYGWIN sshd service on Local Computer started and then stopped.  Some
services stop automatically if they have no work to do, for example, the
Performance Logs and Alerts service"

As I mentioned before, sshd did work during the creation of the VM.  I
followed all the steps on the wiki and went further to create the VM from
scratch all over again, but same thing happens. Is there something I'm

Melba Lopez

Andy Kurth
Virtual Computing Lab
Office of Information Technology
North Carolina State University

Reply via email to