Angular 2 - CORS梦魇

Question

我已经通过大量网站/论坛试图找到解决方案

我认为我的服务器返回了正确的标题，但今天我注意到我的应用程序无法在IE中运行（在Chrome中运行正常）

我收到此错误

Credentials flag was set to true, but Access-Control-Allow-Credentials was not present or was not set to "true".

但我的服务器显然发送了http标头