Credentials flag is 'true', but the 'Access-Control-Allow-Credentials

Question

I am trying to connect to a ASP.NET Web-API Web Service from an AngularJS page and I am getting the following

Credentials flag is \'true\', but the \'Access-Control-Al

Answer 1

For whom, who uses WebApiConfig.cs:

config.EnableCors(new EnableCorsAttribute("*", "*", "*") { SupportsCredentials = true });