Windows Essentials 2012 suite reached end of support on January 10, 2017.
As of January 10, 2017, Windows Essentials 2012 is no longer supported on Windows 10, and is unavailable for download.
Windows Essentials 2012 included Windows Movie Maker, Windows Photo Gallery, Windows Live Writer, Windows Live Mail, Windows Live Family Safety and the OneDrive desktop app for Windows. Already installed applications will continue to work as they do today.
Any websites offering free downloads of Windows Movie Maker are not offering sanctioned Microsoft products. Be cautious as these products may contain viruses or hidden costs.