Are you looking to install the client to find active multiplayer servers?
remains surprisingly relevant. However, players often run into a major roadblock regarding version "1.8." Depending on where you bought the game, version 1.8 is either an official but "broken" Steam update or an unofficial community-led overhaul known as CoD4x . 1. The "Official" Steam 1.8 Patch (The Bug) cod4 patch 1.8