Never start the game through the standard Steam launcher. Use the Fallout 4 Script Extender executable. This bypasses the Steam update check and keeps your version locked. A Note on Safety

Once you have successfully secured the 1.10.163 version, you must take steps to ensure Steam doesn't automatically "fix" (update) it again:

While newer updates have introduced widescreen support and "Creation Club" content, they also fundamentally changed the game’s executable file. This caused a major rift in the modding community. Most essential mods—specifically those relying on the —were built specifically for the 1.10.163 architecture. Players often seek this download to: