As a result of Microsoft® announcing their official End of Life (EOL) dates for Microsoft Windows® XP and Microsoft Windows® Server 2003, NextGen Healthcare will be moving from Microsoft .NET Framework 4 to .NET Framework 4.5.1 with general release of NextGen Ambulatory EHR, Version 5.8 UD2. Therefore, beginning with NextGen Ambulatory EHR, Version 5.8 UD2, Microsoft Windows XP and Microsoft Windows Server 2003 will no longer be supported. NextGen Ambulatory EHR 5.8 UD2 is scheduled for GR in Spring 2015.