Operating system Chromium OS. Microsoft Windows is a family of proprietary operating systems designed by Microsoft Corporation and primarily targeted to Intel architecture based computers, with an estimated 88.9 percent total usage share on Web connected computers. The latest version is Windows 10. In 2011, Windows 7 overtook Windows XP as most common version in use. Microsoft Windows was first released in 1985, as an operating environment running on top of MS-DOS, which was the standard operating system shipped on most Intel architecture personal computers at the time. In 1995, Windows 95 was released which only used MS-DOS as a bootstrap. For
Development of Windows Vista Pack 2 RC Escrow Build Number 6002.16659.090114-1728 (Version 275) Released January, 2009. Windows Vista Service Pack 2 Release Candidate Build Number 6002.16670.090130-1715 (Version 286) Released February, 2009. Windows Vista Service Pack 2 RTM Escrow build to Connect Beta Testers Build Number 6002.17043.090312-1835 (Version ???) Released March, 2009. Available and can be installed via Windows Update Windows Vista Service Pack 2 RTM Escrow Build Number 6002.17506.090313-1730 (Version ???) Released March, 2009. Leak to file sharing websites. Windows Vista Service Pack 2 RTM Build Number 6002.18005.090410-1830 Released 28 April 2009. Officially released by Microsoft via Windows Update on 26 May 2009. –