Windows Vista build 5231 (winmain)

Windows Vista build 5231 is a pre-Beta 2 build of Windows Vista. It is almost the same as build 5231.2 but it is available only in the x86 architecture. It is an earlier compile and it introduced Windows Media Player 11, and Internet Explorer was revamped, as well as Network Connections, including a new tray icon for the network. The start menu has been slightly altered: pressing the "Log Off" button no longer opens an XP-like logoff panel, and upon clicking on "Shut Down", a shutdown timer no longer pops up. A new volume control app is included, allowing the volume of each app to be set independently. An early version of Reliability Monitor is also included.

Installation
This build will BSOD during the setup on QEMU and modern versions of VMware. Using either VirtualBox or VMware with 5.x compatibility is recommended.

Taskbar
If the theme is set to Windows Classic and then reverted to Aero, parts of a taskbar reminiscent of the one seen in build 5048 may be seen.