I have the same problem when trying to connect to an XP server with a Win 10 client. The server has a legacy bundled software which I want to be able to use from the new workstations.
Once the client passes the login step, insted of seeing the server’s desktop, it got dropped with Connection reset by peer error message. I attached the server nx folder. The log was made after a fresh installation. The server was up and running without errors. I tried to connect twice, that is in the logs. I was not waited the 5 attempts at client side but closed the window after first error in both times.
Seeing the logs it seems there is some problem of reaching the node files. Log error complains file does not exist but it does. The issue might get caused that the server PC uses CP1250 codepage (or CP1252) and the username contains both space and accents.