Here are some more things to try: (I did finally see the error - it was right up on top of the file....)
Browse to localhost:16992 or 16993 and make sure something happens. You should connect to 16992 since you do not have TLS implemented.
If in Mutual-auth mode, Outpost will need a client certificate to log in. (This should not be applicable to you.)
Check the username/password. The user account needs to have local access rights. If remote only, it will not work.Are you using your ip address to connect, or are you typing in a host name? If you are trying with the host name, you might want to try it with the actual IP address as well. Have you input a host name for the ME? Just posing questions - I'm not actually sure if you have to do so or if you haven't and you try to connect to the ME using your host name that that is part of the OS configuration, if it would be able to resolve it.