Windows XP, Server 2003 and 8 support has ended.

Although Mircosoft has ended Windows XP support in 2014, Server 2003 in 2015 and Windows 8 (Not 8.1) in 2016. Microsoft has issued a patch for Windows XP (both 32 and 64 bit), Windows Server 2003 (Both Server 2003 and 2003 R2) and Windows 8.

Since Windows XP, Server 2003 and 8 support has ended you should upgrade your computer to a newer version of Windows.

You can download the updates here