<P> Windows XP Professional supports up to two physical processors (CPU sockets); Windows XP Home Edition is limited to one . </P> <P> Windows XP supports a greater number of logical processors . A logical processor is either: 1) One of the two handlers of threads of instructions in one of the cores of a physical processor with support for hyper - threading present and enabled; or 2) one of the cores of one of the physical processors without enabled support for hyper - threading . Windows XP 32 - bit editions support up to 32 logical processors; 64 - bit editions support up to 64 logical processors . </P> <Table> Support status summary <Tr> <Th_colspan="2"> Expiration date </Th> </Tr> <Tr> <Th> Mainstream support </Th> <Td> April 14, 2009 (2009 - 04 - 14) </Td> </Tr> <Tr> <Th> Extended support </Th> <Td> April 8, 2014 (2014 - 04 - 08) </Td> </Tr> <Tr> <Th_colspan="2"> Applicable XP editions: </Th> </Tr> <Tr> <Td_colspan="2"> Home Edition, Professional Edition, Professional x64 Edition, Professional for Embedded Systems, Media Center Editions (all), Starter Edition, Tablet PC Edition and Tablet PC Edition 2005, as well as Windows Fundamentals for Legacy PCs . </Td> </Tr> <Tr> <Th_colspan="2"> Exceptions </Th> </Tr> <Tr> <Th> Windows XP Embedded </Th> <Td> Mainstream support ended on January 11, 2011 . Extended support ended on January 12, 2016 . </Td> </Tr> <Tr> <Th> Windows Embedded for Point of Service </Th> <Td> Mainstream support ended on April 12, 2011 Extended support ended on April 12, 2016 </Td> </Tr> <Tr> <Th> Windows Embedded Standard 2009 </Th> <Td> Mainstream support ended on January 14, 2014 . Extended support ends on January 8, 2019 . </Td> </Tr> <Tr> <Th> Windows Embedded POSReady 2009 </Th> <Td> Mainstream support ended on April 8, 2014 . Extended support ends on April 9, 2019 . </Td> </Tr> </Table> <Tr> <Th_colspan="2"> Expiration date </Th> </Tr>

When did microsoft announce end of xp support