OpenSSH 8.9p1-1 Connects successfully but then hangs - Killing ssh-agent resolves the issue
Henry S. Thompson
Fri Apr 1 09:21:20 GMT 2022
Jim Garrison via Cygwin writes:
> My Cygwin ssh client stopped working... It would successfully connect to
> the remote (Debian) host but then hang without displaying the command
> prompt. See debug output attached, as well as cygcheck output.
> I decided to run setup to see if there was a newer version of openssh.
> In preparation for that I always terminate all Cygwin processes because
> they will interfere with the update. I killed the ssh-agent process and
> on a whim decided to try connecting again. This time it worked.
> This would seem to indicate something in ssh-agent is interfering with
> the connection. There are no credentials loaded into ssh-agent.
There are reports out there of ssh-agent getting stuck: just out of
curiousity if this happens again, check to see if ssh-agent is using
100% of a CPU. If so then search for "ssh-agent" "100% CPU" to see
what the likely culprits are.
Henry S. Thompson, School of Informatics, University of Edinburgh
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