How to deploy to remote machine (win32) in LAN

I have to deploy to this machine, for testing my game in a network environment.

Using the Unreal Frontend Tool | Unreal Engine 5.1 Documentation

I tried to follow the steps here, but adding my LAN machine is not possible via hostname or IP, I always get the “failed to create” message without any more info.

The remote machine runs Windows 8, Win32. I know that the firewall is fully deactivated, so there shouldnt be an issue.