Your best bet is to check the Section 8: Prejudice Steam Community Hub or PCGamingWiki . These sources provide legitimate instructions on how to recover the game if you already own it or how to navigate the technical fixes required for modern systems. If you’d like, I can look into:

Since the game relied heavily on Games for Windows Live, a standard .exe download often won't work on modern Windows (10/11) without community-made patches or "XLiveless" DLLs.

Originally, the game was distributed via Games for Windows Live (GFWL), Steam, and Xbox Live Arcade.

If you are looking for this file to play the game today, there are several hurdles:

The and why the game was delisted.