Windows Vista build 5421

6.0.5421.winmain.060428-1903
Build of Windows Vista
6.0.5421.winmain.060428-1903
OS family
Architecturex86
Compiled2006-04-28
Timebomb
Works in

Windows Vista build 5421 is a pre-RC1 build of Windows Vista. A screenshot of this build was shown in a MSDN blog called "User Account Control Prompts on the Secure Desktop"[1]. It demonstrated the User Account Control and its effects on the user. The blog later replaced the image of the build with a copy from build 5381, however Polish website WinBeta.pl[2] archived the image before it got replaced.

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