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Microsoft Operating Systems

Microsoft Operating Systems (Release Dates)

Release Date OS Version
1981 MS-DOS 1.0
1982 MS-DOS 1.25
1983 MS-DOS 2.0
Nov-85Windows v1.0
1986 MS-DOS 3.2
1987 MS-DOS 3.3
Apr-87Windows v2.0
1988 MS-DOS 4.0
1988 MS-DOS 4.01
1990 MS-DOS 5.0
May-90 Windows v3.0 
Apr-92 Windows v3.1
Aug-93 Windows NT v3.1 
 1994MS-DOS 6.22
Feb-94 Windows v3.11 
Sep-94 Windows NT v3.5 
Jun-95 Windows NT v3.51 
Aug-95 Windows 95
Aug-96 Windows NT v4.0 Workstation & Server
Jun-98 Windows 98
May-99 Windows 98 SE 
Feb-00 Windows 2000 Professional & Server
Aug-00 Windows 2000 Datacenter Server
Sep-00 Windows ME 
Oct-01 Windows XP Home & Professional 
Apr-03 Windows Server 2003
2004 Windows XP Professional (64-Bit)
2004 Windows Server 2003 (64-Bit)
Jan-07 Windows Vista
Feb-08
Windows Server 2008
Jun-09
Windows 7
Jun-09 Windows Server 2008 R2
Oct-12
Windows 8
Oct-12Windows Server 2012
Oct-13Windows 8.1
Oct-13Windows Server 2012 R2
Jul-15Windows 10

Upgrading through every version of windows, from MS-DOS 5 to Windows 7.

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