allowDefinition='MachineToApplication' msbuild error

Question

We have a ASP.NET MVC with 4-5 different build configurations. Whenever we change the build configuration, we need to delete the obj folder for the web project, since we get

Answer 1

That error indicates that you are trying to something specific to an application at an IIS tree level that isn't defined as an application. For example if you try to do app-level functions in a web.config in a virtual directory, you will get that error. You need to find the path you are deploying to and make sure that it is defined in IIS as an application vs a folder or vdir.