This is the most reliable method. With an Xbox Game Pass Ultimate subscription, you can stream the game to your PC via the cloud.
If you manage to buy a legacy Steam key, it can still be redeemed and downloaded. Fable 3 Download PC Game
If you do get a copy running, you will likely need the or "GFWL Remover" mods. These community-made patches: Remove the broken login system. Unlock DLC that is otherwise inaccessible. Fix crashing on Windows 10 and 11. This is the most reliable method
The game relied on "Games for Windows Live," which is now defunct. " which is now defunct.