Windows Vista build 5203 (winmain)

Windows Vista build 5203 (winmain) is an unleaked build of Windows Vista. Screenshots of this build were found in a BetaArchive topic. TheVista.ru also had or has the build and leaked many screenshots as well. This build was compiled before 5112 despite having a higher build number, so the build tag for it still says "Microsoft(R) Windows(R) Codename Longhorn".