Support Ending for the .NET Framework 4, 4.5 and 4.5.1

starting January 12, 2016 Microsoft will no longer provide security updates, technical support or hotfixes for .NET 4, 4.5, and 4.5.1 frameworks.
Support Ending for the .NET Framework 4, 4.5 and 4.5.1
starting January 12, 2016 Microsoft will no longer provide security updates, technical support or hotfixes for .NET 4, 4.5, and 4.5.1 frameworks.
http://blogs.msdn.com/b/dotnet/archive/2015/12/09/support-ending-for-the-net-framework-4-4-5-and-4-5-1.aspx

這篇文章最底下的第十點，針對每一版的 .NET停止支援說明，比較詳細（包含對應的OS）
http://blogs.msdn.com/b/dotnet/archive/2015/12/09/support-ending-for-the-net-framework-4-4-5-and-4-5-1.aspx

10. What is the Support Lifecycle policy for the different versions of .NET Framework?

總之，記得這個日期 January 12, 2016
http://blogs.msdn.com/b/dotnet/archive/2015/12/09/support-ending-for-the-net-framework-4-4-5-and-4-5-1.aspx