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My requests have been blocked by CORS policies, I have the following in my startup class:

         services.AddCors(options =>
        {
            options.AddDefaultPolicy(
                builder => {
                    builder
                        .AllowAnyOrigin()
                        .AllowAnyHeader()
                        .AllowAnyMethod()
                        .AllowCredentials();
                });
        });

I'm using an Nginx server and I always get the following error when I make a request with my angular app:

has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.

Any help is really appreciated!

Edit

I made some changes suggested in the code, but I got the same error. The changes made were the following:

         services.AddCors(options =>
        {
            options.AddPolicy(
                "corsapp",
                builder => {
                    builder
                        .WithOrigins("https://myurl/", "https://myurl2/")
                        .AllowAnyHeader()
                        .AllowAnyMethod()
                        .AllowCredentials();
                });
        });

And in the Configure method:

        app.UseRouting();
        app.UseCors("corsapp");

        app.UseAuthorization();

myurl and myurl2 are two urls that make requests to the api, both have the same domain, but different subdomain

Improve this question
11
  • which version of .net core are you using? Commented Mar 29, 2022 at 21:45
  • I'm using net core 6 Commented Mar 29, 2022 at 21:49
  • check this link out: stackoverflow.com/questions/70511588/… It basically says create a policy, and then add app.UseCors("THE_POLICY_YOU_CREATED"); Commented Mar 29, 2022 at 21:53
  • I just tried that out, and I got the same response :( Commented Mar 29, 2022 at 22:04
  • make sure you write app.UseCors("WHATEVER") before you use app.MapControllers() or app.UseMvc() Commented Mar 29, 2022 at 22:09
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