Visual Studio 2013 is unable to open the Test Window
问题 When I open Visual Studio 2013 and load my solution I'm greeted by an error message telling me the Test Window is unable to load. The composition produced a single composition error. The root cause is provided below. Review the CompositionException.Errors property for more detailed information. 1) Cannot compose part 'Microsoft.VisualStudio.TestWindow.Controller.TestsServiceInternal' because a cycle exists in the dependencies between the exports being composed. To break this cycle, consider