how to host lan server

I plan to update this guide more soon. Halo 2 PC Dedicated Server Setup Guide - First download the Halo 2 Dedicated Server Pack here: https://drive.google.com/file/d/1-Ua-qYhRavNU-EXuXxPXZIR44eL1TRED/view - Extract the Halo 2 Dedicated Server folder to a location of your choosing...

So for like 2 months I've been trying to figure out how to host a game and have my brother join. I really wanna play coop campaign with him and i found this tool on this page: https://halo2.online/threads/coop-mode-update.468/ So now I'm trying to host a server but every time I do i get this...