Windows NT 3.1 build 404

Windows NT 3.1 build 404 is the March 1993 beta of Windows NT 3.1. This build now uses a setup that's closer to the one in the RTM. Alongside, new applications like Mail, Schedule+, and new Regedit have been added. This is the first build with a default color scheme based on the one in Windows 3.1 instead of Windows 3.0 like in the previous builds.