Windows 8.1 build 9428

Windows 8.1 build 9428 is part of the Milestone Preview. It was compiled on June 12th, 2013. There's a public screenshot for it but it was confirmed to be fake. It was made by a BetaArchive member (name won't be published), despite its spreadness all over the internet websites.

However, the buildstring itself is real since an internal WinJS build gotten from Windows Store had the buildstring. The package name was "Microsoft.WinJS.2.0.Preview_1.0.9428.0_neutral__8wekyb3d8bbwe"