Windows 8/6.2.7963.winmain.110310-1721

Windows 8 build 7963 (with a buildtag of 6.2.7963.winmain.110310-1721) is a Milestone 3 build of Windows 8. It was leaked on July 2, 2015.

MShelp
This build includes a link to MShelp (later Store), but it fails to launch because the files are missing.