Switching to Managed Compatibility Mode in Visual Studio 2013
Oct 16, 2013Andrew Chan - MSFT

Summary
This post introduces the ability to switch to a legacy managed debug engine for specific scenarios not yet supported by the current engine, including .NET languages other than C#, VB, or F# with their own Expression Evaluators (like managed C++), and enabling Edit and Continue (EnC) for C++ projects during mixed-mode debugging. It details how to enable this 'Managed Compatibility Mode' globally, per project, during attach, or by manually editing project files.