Split from https://www.nomachine.com/forums/topic/someone-walk-me-through-key-based-authentication?view=all#post-10329
Original text: Found an old post and think I fixed that problem (the files PuTTY-gen makes are different, so it requires you to use the box output for the authorized file and to Export OpenSSH key under Conversions). I think I did it correctly, anyways, because it fails if I get the wrong passphrase.
Now I have a new problem though. When it tried to connect this way it spits out “Error is 22: Invalid argument”, and the session throws errors starting with “DaemonLogin/DaemonLogin: ERROR! Invalid reply ‘nx> 103 hello on board [user].’ context[D].”
I’d appreciate any help, and just in case I’ll attach the session log.