Angular 8 differential loading failing due to auth issues with dotnet core

Since the posting of the accepted answer the option to handle this in the first way McAden suggests by adding crossorigin="use-credentials" has been added to the Angular CLI options.

Original feature request

Angular CLI documentation

In your angular.json add

{
   ...,
   "build": {
     "builder": ...,
     "options": {
        ...
        "crossOrigin": "use-credentials"
     }
   }
}