Angular POST and ASP.NET Core Web API : http 401 Unauthorized with windowsAuthentication= true

I have separate projects for frontend (Angular) and backend (ASP.NET Core Web API). I have been setup the CORS as well the Windows AD authentication. All that is working well for GET calls, but I am having issues with the POST.

I am getting following error:

Access to XMLHttpRequest at 'https://localhost:44314/api/CompletionDate' from origin 'http://localhost:4200' has been blocked by CORS policy: Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource
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In my .NET Core project, I have this config in the launchSettings.json file:

"windowsAuthentication": true,
"anonymousAuthentication": false,


because I need to get the Active Directory username.

What can I do in order to make the POST and PUT calls work?

I have already enable cors on the server, and I use withCredentials: true from the client.

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