This forces Windows XP to receive updates and patches via automatic update even though Microsoft has stopped providing them.
It works by tricking Windows into thinking it is the Windows Embedded POSReady 2009 version, which will continue to receive updates until April 9, 2019.
This only works on 32-bit versions of Windows.
copy the lines below and paste into notepad save as update.reg (not update.reg.txt)

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SYSTEM\WPA\PosReady]
"Installed"=dword:00000001