On 14 July 2015, Microsoft is stopping support for Windows Server & Hosting 2003 and Window Server 2003 R2, signaling the stop of updates security and immediate fixes.
Microsoft will continue to offer specific charging support to organizations that have started upgrading to next generation software. Microsoft recommends Window Server 2012 R2, the platform cloud computing Microsoft Azure and Office 365, more for which they are published at http://www.microsoft.com/el-gr/business/server-2003-end-of-support/