Installation guide on how to install and setup a Halo 2 Dedicated Server on a Windows 8.1 computer in Automatic LIVE mode as a Windows Service.Please consult the server read-me for more details on server commands and how to setup the server on LAN mode. You will need the Oct. 07 update in order for players to connect to your server over Live.
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Make sure to follow the steps correctly. Once the server is up in Live mode, you can create a shortcut of h2admin so that you can administer server commands easier, by going to Properties of the shortcut, and setting the Target to: “C:Program Files (x86)Microsoft GamesHalo 2 Dedicated Serverh2admin.exe” -live