AllowAnyOrigin Cors Not working Axios Vuejs

It turns out the .Net Core Server was not set up right, it wasn't until I was trying to use the browser on my local machine did the CORS problem crop up.

I'm not sure if the CORS implementation changed and I was not aware, or if I just wasn't doing it right from the start, but I was sure I followed guides.

The first thing I changed was ensuring that the Cors Policy was added before configuring the app to use MVC.

The second thing I did, and I suspect this is optional, but best practice, I also moved the policy logic to the ConfigureServices method.

My final code looked below. I'm keeping as much in tact to preserve the order.

 public void ConfigureServices(IServiceCollection services)        {            // Add framework services.            services.AddCors(options =>            {                options.AddPolicy("CorsPolicy",                    builder => builder.AllowAnyOrigin()                    .AllowAnyMethod()                    .AllowAnyHeader()                    .AllowCredentials());            });            services.AddOptions();            services.AddSwaggerGen();            ///Authentication configuration went here.            services.AddSingleton<IConfiguration>(Configuration);            services.AddMvc();        }    // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.    public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)    {        loggerFactory.AddConsole(Configuration.GetSection("Logging"));        loggerFactory.AddDebug();        app.UseExceptionHandler("/Home/Error");        app.UseStaticFiles();        app.UseCors("CorsPolicy");        app.UseMvc(routes =>        {            routes.MapRoute(                name: "default",                template: "{controller=Home}/{action=Index}/{id?}");        });        app.UseSwagger((httpRequest, swaggerDoc) =>        {            swaggerDoc.Host = httpRequest.Host.Value;        });        app.UseSwaggerUi(swaggerUrl: "/{appname}/swagger/v1/swagger.json");

Activating the cors didn't work for me for the PUT and DELETE methods, what I did was add some configuration lines in the web.config file to remove the WebDav module.

I used this inside the existing tag system.webServer tag in the web.config file

<modules runAllManagedModulesForAllRequests="false">    <remove name="WebDAVModule" /></modules>

I found the lines in this site:

Modify the web.confighttps://hovercraft.ie/asp-net-core-web-api-put-delete-methods-not-allowed-405-error/

Hope this helps.