: Uninstall any existing mods or old versions. Manually delete the leftover folder in Program Files and the Zero Hour Data folder in your Documents to prevent old cache files from causing conflicts.
Modern Windows versions often clash with certain legacy .dll files. Reddit·r/commandandconquer zeidgs+download+zero+hour+fix
Navigate to Documents > Command and Conquer Generals Zero Hour Data . : Uninstall any existing mods or old versions