Hi Takashi, Attached is the ssh_config and sshd_config. Peter Sent from Mail for Windows 10 From: Takashi Yano Sent: Friday, 18 September 2020 10:10 AM To: cygwin@cygwin.com Cc: Peter Board Subject: Re: Cygwin 3.1.5, 3.1.6 and 3.1.7 builds reporting tty errors with OpenSSH Services in indows Event Logs On Thu, 17 Sep 2020 22:44:52 +0000 Peter Board wrote: > F:\cygwin64\bin>cygrunsrv -V -L > Service : cygsshd > Display name : CYGWIN cygsshd > Current State : Running > Controls Accepted : Stop > Command : /usr/sbin/sshd -D > stdin path : /dev/null > stdout path : /var/log/cygsshd.log > stderr path : /var/log/cygsshd.log > Environment : CYGWIN="CYGWIN" > Process Type : Own Process > Startup : Manual > Dependencies : tcpip > Account : LocalSystem No suspicious settings other than meaningless > Environment : CYGWIN="CYGWIN" Could you please attach /etc/ssh_config and /etc/sshd_config ? -- Takashi Yano