This patch is not for Windows. Windows users are typically on version 1.67 (Steam/Disc) or 1.69 (EA App).
on Mac or PC, the "64-bit & Metal" version should appear as a free addition in your EA library. Installation The Sims 3 Patch 1.70 Download
: Only available for Origin/EA App macOS users on 64-bit systems. This patch is not for Windows
: A specific version released only for macOS users to ensure compatibility with modern Apple systems. Safe Download Sources The Sims 3 Patch 1.70 Download
Sims 3 Patch 1.70 is a specific update released primarily for macOS users