Ensure your Windows 7 is updated to Service Pack 1 (SP1) . Without it, many of the C++ redistributables KiCad needs will fail to install.
Even as an older version, it includes the 3D viewer, Push-and-Shove router, and extensive component libraries. Kicad For Windows 7
Technically, it is . Users have reported "Entry Point Not Found" errors because these versions look for functions in api-ms-win-core-path-l1-1-0.dll , which does not exist in Windows 7. While some community "hacks" exist to port these DLLs, they often lead to frequent crashes and data loss. Summary of Benefits (Version 5.1.12) Ensure your Windows 7 is updated to Service Pack 1 (SP1)