List of support for Windows X.XX series

See a list of supported and no longer supported versions based on the Windows X.XX series {| class="article-table" !Name of the OS ! General Availability ! Released to Manufacturing !Mainstream support !Extended support
 * Windows 1.0
 * N/A
 * January 9, 2007
 * Windows 1.0 Romanian Edition
 * January 1, 1990
 * January 9, 2007
 * Windows 2.0
 * N/A
 * January 9, 2007
 * Windows 2.1
 * N/A
 * January 9, 2007
 * Windows 3.0
 * N/A
 * January 9, 2007
 * Windows 3.1
 * N/A
 * January 9, 2007
 * Windows 3.2
 * N/A
 * January 9, 2007
 * Windows 4.0
 * N/A
 * January 9, 2007
 * Windows 4.1
 * N/A
 * January 9, 2007
 * Windows 5
 * June 29, 1999
 * June 23, 1999
 * October 16, 2002
 * January 9, 2007
 * Windows 5.1
 * January 8, 2002
 * December 1, 2001
 * April 14, 2006
 * January 9, 2007
 * Windows 6
 * N/A
 * January 9, 2007
 * Windows 4.0
 * N/A
 * January 9, 2007
 * Windows 4.1
 * N/A
 * January 9, 2007
 * Windows 5
 * June 29, 1999
 * June 23, 1999
 * October 16, 2002
 * January 9, 2007
 * Windows 5.1
 * January 8, 2002
 * December 1, 2001
 * April 14, 2006
 * January 9, 2007
 * Windows 6
 * June 23, 1999
 * October 16, 2002
 * January 9, 2007
 * Windows 5.1
 * January 8, 2002
 * December 1, 2001
 * April 14, 2006
 * January 9, 2007
 * Windows 6
 * Windows 6
 * Windows 6

December 25, 2001

 * December 1, 2001
 * January 6, 2011
 * April 1, 2014
 * Windows 7
 * N/A
 * Windows 8
 * N/A
 * Windows 8.1
 * N/A
 * Windows 9
 * N/A
 * Windows 10
 * N/A
 * Windows 11
 * N/A
 * Windows 11 PC
 * N/A
 * Windows 12
 * N/A
 * }
 * Windows 9
 * N/A
 * Windows 10
 * N/A
 * Windows 11
 * N/A
 * Windows 11 PC
 * N/A
 * Windows 12
 * N/A
 * }
 * N/A
 * Windows 11
 * N/A
 * Windows 11 PC
 * N/A
 * Windows 12
 * N/A
 * }
 * Windows 11 PC
 * N/A
 * Windows 12
 * N/A
 * }
 * Windows 12
 * N/A
 * }
 * N/A
 * }
 * N/A
 * }
 * }