The 'Access-Control-Allow-Origin' header contains multiple values '*, *', but only one is allowed

Question

I\'m using Angular and ASP.NET API. The issue I\'m facing: when I add CORS in the API code, it works on Internet Explorer but does not work on Chrome and Firefox.

Here i

Answer 1

You are setting CORS twice. I think that is the issue.

Please remove any one CORS settings. You can either remove it from web.config or from WebApiConfigFile.cs.