x64 is one of the 'build platforms' for .NET projects in Visual Studio: With Visual Studio 2013 Preview, you can now use [Edit and Continue] with x64, A

x64 is one of the 'build platforms' for .NET projects in Visual Studio: With Visual Studio 2013 Preview, you can now use [Edit and Continue] with x64, AnyCPU, and (of course) x86 projects. See also: http://visualstudiohacks.com/articles/visual-studio-net-platform-target-explained/ http://visualstudiohacks.com/articles/visual-studio-net-plat...