(both the 2009 original and the 2022 reboot) responsible for loading the game's User Interface (UI)
(if you own a legitimate copy)
If you have landed on this page, you are likely staring at a frustrating black screen, a missing file error, or a crash report related to ui.ff . For nearly two decades, Call of Duty 4: Modern Warfare and the original Modern Warfare 2 (2009) have haunted PC gamers with a specific, cryptic error: or "Fastfile ui.ff is corrupt." call of duty modern warfare 2 ui.ff download