If you specifically need version for multiplayer, ensure your game client matches the server version to avoid mismatch errors.

Terraria v1.4.4.9 was officially released on . While it is no longer the most current version—following the release of v1.4.5 on it remains widely supported for multiplayer and modding. Where to Download Terraria

: You can find public Terraria Servers that specifically run v1.4.4.9 for consistent online play.