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I am trying to use emacs tramp via /ssh: which calls Windows 11's native ssh client. It hangs. Reading logs, it seems ssh.exe never serves the password prompt username@hostname's password: to tramp, so tramp hangs until timeout. It works fine to install putty and just use /plink:, but this is a new dependency.

Through powershell or cmd.exe, the same ssh.exe gives the prompt + connects fine. As an experiment I tried using ssh.exe through emacs eshell with the same problem. Output of ssh.exe user@hostname -vvv -tt is identical in cmd and eshell except that in eshell the password prompt is omitted. Adding RequestTTY force for hostname in client SSH config doesn't affect things.

Is this a problem with Windows or emacs?

GNU Emacs 29.3, Windows 11, ssh.exe -V gives OpenSSH_for_Windows_8.6p1, LibreSSL 3.4.3.

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3
  • ssh.exe expects the password to be entered from a TTY.
    – shynur
    Commented Oct 6 at 17:44
  • I wonder if it's possible to have it get password through an auth agent instead
    – Christian Chapman
    Commented Oct 6 at 20:40
  • Then I think this is a ssh.exe question.
    – shynur
    Commented Oct 7 at 10:44

1 Answer 1

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The Tramp manual says:

4.19.5 Issues with Cygwin and MS Windows ssh

MS Windows' ‘ssh’ does not open a remote TTY. Use the method ‘sshx’ or ‘scpx’ instead. Furthermore, it cannot read a passphrase for ssh private keys. Use the MS ‘ssh-agent’.

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