There appears to be a regression in the most recent OpenSSH cygwin package (5.9p1-1, built 1/18/2012) related to the ssh-agent program.
The ssh-add program is unable to add SSH keys because the ssh-agent program doesn't appear to be creating its socket file properly in /tmp. Platform: Windows 7 64-bit Steps to reproduce: 1. Install OpenSSH 5.9p1-1 in Cygwin (or upgrade to it) 2. Run the ssh-agent program spawning a bash shell $ ssh-agent bash 3. Run the ssh-add program with no arguments: $ ssh-add 4. You will receive the following error message Could not open a connection to your authentication agent. 5. You should be able to confirm that the SSH_AUTH_SOCK environment variable points to a file that doesn't exist in /tmp $ env | grep ^SSH SSH_AGENT_PID=8564 SSH_AUTH_SOCK=/tmp/ssh-ipSOmcSz8532/agent.8532 $ ls -l /tmp/ssh* ls: cannot access /tmp/ssh*: No such file or directory Workarounds: Downgrade to OpenSSH_5.8p1 using Cygwin's setup.exe. -- Philip Lowman -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple