Windows XP SP4 Unofficial comes to the rescue, providing XP users with the latest official XP updates alongside up-to-date components up to May 2014, also including POSReady updates. Thus, computers that are still stuck with this late OS version can become vulnerable to malicious attacks. Microsoft has ended the official support for Windows XP for a while now, which means that there are no more official security updates for users of the XP operating system and technical support is not provided anymore. If that is not possible, then there is an unofficial upgrade to Windows XP called service pack 4. Best answer is to get the free upgrade to Windows 10.