Good day!
I have a question about the multiplayer mode in Heroes of Might and Magic III over a local network.
I can't connect to the game via TCP/IP after switching from a USB connection to a network modem and setting the IP address to be obtained automatically. I can't manually assign IP addresses to both machines with this network configuration.
The systems are Windows XP on a desktop and Windows 7 on a netbook. Firewalls and antivirus programs are disabled. Wi-Fi encryption is also disabled. The computers can see each other perfectly...

This problem has been described repeatedly online, but no clear solutions have been found.

Thank you!