The download was prompted by a pop-up or a site claiming your "drivers are out of date."

: You need a utility like WinRAR or 7-Zip to open .rar files.

The file size is unexpectedly large or small for a simple 3D model.

: Once opened, it should contain .package files (for Sims 4 ). If you see a .exe , .msi , or .bat file inside, do not run it —this is almost certainly a virus.

If this is a legitimate game mod you have already downloaded:

: Place .package files into your Documents\Electronic Arts\The Sims 4\Mods folder. Security Recommendations

The file is hosted on a generic file-sharing site (e.g., MediaFire, Mega) without a supporting community page.