ASP.NET 4 Hosting :: What’s New in the .NET Framework 4
Other new features and improvements in the .NET Framework 4 are described in the following sections:1. Application Compatibility and Deployment The .NET Framework 4 is highly compatible with applications that are built with earlier .NET Framework versions, except for some changes that were made to improve security, standards compliance, correctness, reliability, and performance. The .NET Framework 4 does not automatically use its version of the common language runtime to run applications that are built with earlier versions of the .NET Framework. To run older applications with .NET Framework 4, you must compile your application with the target [...] Continue Reading…