Microsoft Windows history

Year Event
See the codename definition for a listing of Microsoft codenames.
1983 Bill Gates announces Microsoft Windows November 10, 1983.
1985 Microsoft Windows 1.0 is introduced in November 20, 1985 and is initially sold for $100.00.
1987 Microsoft Windows 2.0 was released December 9, 1987 and is initially sold for $100.00.
1987 Microsoft Windows/386 or Windows 386 is introduced December 9, 1987 and is initially sold for $100.00.
1988 Microsoft Windows/286 or Windows 286 is introduced June, 1988 and is initially sold for $100.00.
1990 Microsoft Windows 3.0 was released May, 22 1990. Microsoft Windows 3.0 full version was priced at $149.95 and the upgrade version was priced at $79.95.
1991 Following its decision not to develop operating systems cooperatively with IBM, Microsoft changes the name of OS/2 to Windows NT.
1991 Microsoft Windows 3.0 or Windows 3.0a with multimedia was released October, 1991.
1992 Microsoft Windows 3.1 was released April, 1992 and sells more than 1 Million copies within the first two months of its release.
1992 Microsoft Windows for Workgroups 3.1 was released October, 1992.
1993 Microsoft Windows NT 3.1 was released July 27, 1993.
1993 Microsoft Windows 3.11, an update to Windows 3.1 is released December 31, 1993.
1993 The number of licensed users of Microsoft Windows now totals more than 25 Million.
1994 Microsoft Windows for Workgroups 3.11 was released February, 1994.
1994 Microsoft Windows NT 3.5 was released September 21, 1994.
1995 Microsoft Windows NT 3.51 was released May 30, 1995.
1995 Microsoft Windows 95 was released August 24, 1995 and sells more than 1 Million copies within 4 days.
1995 Microsoft Windows 95 Service Pack 1 (4.00.950A) is released February 14, 1996.
1996 Microsoft Windows NT 4.0 was released July 29, 1996.
1996 Microsoft Windows 95 (4.00.950B) aka OSR2 with FAT32 and MMX support is released August 24, 1996.
1996 Microsoft Windows CE 1.0 was released November, 1996.
1997 Microsoft Windows CE 2.0 was released November, 1997.
1997 Microsoft Windows 95 (4.00.950C) aka OSR2.5 is released November 26, 1997.
1998 Microsoft Windows 98 was released June, 1998.
1998 Microsoft Windows CE 2.1 was released July, 1998.
1998 In October of 1998 Microsoft announced that future releases of Windows NT would no longer have the initials of NT and that the next edition would be Windows 2000.
1999 Microsoft Windows 98 SE (Second Edition) was released May 5, 1999.
1999 Microsoft Windows CE 3.0 was released 1999.
2000 On January 4th at CES Bill Gates announces the new version of Windows CE will be called Pocket PC.
2000 Microsoft Windows 2000 was released February 17, 2000.
2000 Microsoft Windows ME (Millennium) released June 19, 2000.
2001 Microsoft Windows XP is released October 25, 2001.
2001 Microsoft Windows XP 64-Bit Edition (Version 2002) for Itanium systems is released March 28, 2003.
2003 Microsoft Windows Server 2003 is released March 28, 2003.
2003 Microsoft Windows XP 64-Bit Edition (Version 2003) for Itanium 2 systems is released on March 28, 2003.
2003 Microsoft Windows XP Media Center Edition 2003 is released on December 18, 2003.
2004 Microsoft Windows XP Media Center Edition 2005 is released on October 12, 2004.
2005 Microsoft Windows XP Professional x64 Edition is released on April 24, 2005.
2005 Microsoft announces it's next operating system, codenamed "Longhorn" will be named Windows Vista on July 23, 2005.
2006 Microsoft releases Microsoft Windows Vista to corporations on November 30, 2006.
2007 Microsoft releases Microsoft Windows Vista and Office 2007 to the general public January 30, 2007.
2008 Microsoft releases Microsoft Windows Server 2008 to the public on February 27, 2008.
2009 Microsoft releases Windows 7 October 22, 2009.
2012 Microsoft releases Windows 8 October 26, 2012.

Computer History