The CodeRush extension utilizes the "Roslyn" engine, which is natively supported by the Visual Studio 2015 IDE. The following editions are supported by the extension.
- Visual Studio 2015 Community
- Visual Studio 2015 Professional
- Visual Studio 2015 Enterprise
- Visual Studio 2017 Community
- Visual Studio 2017 Professional
- Visual Studio 2017 Enterprise
The Express edition is not supported, because it does not support third-party extensions.
If you use an older Visual Studio version, consider the CodeRush Classic extension.