Is it possible to connect to my VNC server via ssh loopback using public key authentication with KRDC? I have password authentication turned off my for server, but when I select ssh loopback in KRDP it always asks me for a password and then fails. I tried remmina and that works fine as long as I change the authentication type to public key.
Solution: ssh-agent was not running for my account which was the issue. After setting up ssh-agent as described in SSH keys - ArchWiki, specifically adding it to my .zprofile file. krdc works as expected