ASP.NET Core 6: implementing CORS Policy Not Being Applied to Specific Endpoints in a Web API
I'm stuck trying to I'm optimizing some code but I'm currently working on an ASP.NET Core 6 Web API and have run into a frustrating scenario with CORS policy not being applied as expected for certain endpoints. I have configured CORS in my `Startup.cs` file like this: ```csharp public void ConfigureServices(IServiceCollection services) { services.AddCors(options => { options.AddPolicy("AllowSpecificOrigin", builder => { builder.WithOrigins("https://example.com") .AllowAnyHeader() .AllowAnyMethod(); }); }); services.AddControllers(); } public void Configure(IApplicationBuilder app, IWebHostEnvironment env) { app.UseRouting(); app.UseCors("AllowSpecificOrigin"); app.UseAuthorization(); app.UseEndpoints(endpoints => { endpoints.MapControllers(); }); } ``` However, when I make a `GET` request to one of my endpoints (let’s say `/api/data`) from the frontend hosted on `https://example.com`, I get the following behavior in the browser console: ``` Access to fetch at 'https://myapi.com/api/data' from origin 'https://example.com' has been blocked by CORS policy: Response to preflight request doesn't pass access control check: It does not have HTTP ok status. ``` This only happens for specific endpoints, while others seem to work fine. I’ve double-checked that all endpoints I want to allow are decorated with the `[EnableCors("AllowSpecificOrigin")]` attribute, yet I still encounter this scenario. I've also tried using `services.AddCors()` in different configurations and adjusting the order of middleware, but nothing seems to resolve it. Could this be related to how I am handling the OPTIONS preflight requests or perhaps the order of middleware in the pipeline? Any insights or suggestions on what I might be missing would be greatly appreciated! I'd love to hear your thoughts on this. I appreciate any insights!