Some manual installations require editing the GameVersion.txt or running a registry patch. For official copies, Origin/EA App will recognize the files automatically.

When looking for the file, it is essential to distinguish between official game data and third-party distributions.

: The official game files for this expansion typically require significant space, though the total size of The Sims 4 with all DLCs can exceed 55 GB .

Typically found at: Documents > Electronic Arts > The Sims 4 Or program files: C:\Program Files (x86)\Origin Games\The Sims 4

Use WinRAR, 7-Zip, or Windows’ built-in extractor. Right-click Sims4-DLC-EP04-Cats-and-Dogs.zip and select “Extract Here.”