Windows Home Server, code-named Quattro, is a home server operating system from Microsoft. Launched in 2007 Microsoft stopped future releases after Home Server 2011. Windows Home Server is mainly designed to help families keep their files and data automatically backed up, organized, and accessible. Affordable and easy to use, it's available as a preinstalled solution. One can use it to recover lost files, restore your PC, help keep your devices running smoothly and safely, and stream media files across your home network.