How To Fix Unable To Load Library Steamclient64.dll |work| -

Many security products quarantine steamclient64.dll due to its deep system interactions (e.g., memory patching, DRM).

The DLL is a "Steam emulator" file. It tricks the game into thinking Steam is running when it isn't. When Windows cannot locate, read, or execute this file, you get the error.

If you downloaded the game from a non-Steam source (GOG, Epic, or a repack), the steamclient64.dll might be missing entirely.