I\'ve just swapped our project from ASP .Net Core 1.0.0-rc2-final to 1.0.0. Our website and client have stopped working because of the capitalization of JSON properties. For
For some one who is using ASP.net WEB API ( rather than ASP.NET Core).
Add this line in your WebApiConfig.
//Comment this jsonFormatter.SerializerSettings.ContractResolver = new CamelCasePropertyNamesContractResolver();
jsonFormatter.SerializerSettings.ContractResolver = new DefaultContractResolver();
Adding this as an answer here because this comes up first in google search for web api as well.