As the directions in this topic detail:
I am using a SystemCaller to launch Pageant and load the private keys so the FTPCaller can successfully authenticate a SFTP connection. This is working great in FME Desktop. However, when I load the workspace to FME Server, the SystemCaller just hangs. I have gone the extra step of even loading the keys in Pageant on the server, but still didn't help. Is there something extra that I must do to get this process to work on FME Server? I am using FME Desktop and Server 2022.1 Build 22618.