Extend XP Windows Updates until 2019 by cutting and pasting the following script into Notepad; saving it as “wepos.reg” and then running it from the Admin Command prompt. This will add the PosReady key to the registry to enable your system to receive security fixes and updates designed for Windows XP Embedded for Point of Service (WEPOS) systems.
After applying the registry patch log out or restart and run “Windows Updates” to get your system up to date. It might take a while and suffice to say where “Windows Updates” are concerned patience is a virtue.
Windows Registry Editor Version 5.00 [HKEY_LOCAL_MACHINE\SYSTEM\WPA\PosReady] "Installed"=dword:00000001
Note there is no guarantee how long this hack will last before Microsoft plug this loophole. The updates are geared to embedded systems but the security updates should generally applicable and better than none.