Azure App Service SSL Certificate Not Recognized for Custom Domain with CORS Issues
I've tried everything I can think of but I'm sure I'm missing something obvious here, but I'm experiencing issues with an Azure App Service where the SSL certificate for my custom domain is not being recognized, leading to CORS errors in my SPA. I set up the App Service using .NET 6 and have added the custom domain through the Azure portal. The SSL certificate appears to be installed correctly. However, when I try to access the API from my frontend, I get the following behavior: ``` Access to fetch at 'https://api.mydomain.com/endpoint' from origin 'https://myfrontend.com' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource. ``` I’ve tried several things to troubleshoot the scenario: 1. Verified the SSL certificate using tools like SSL Labs and it shows as valid. 2. Checked the CORS settings in my App Service, and I have added my frontend domain as an allowed origin. 3. Ensured that my API is configured to include the necessary headers like `Access-Control-Allow-Origin` in the response. 4. Set up the `AzureAppService` CORS settings in the Azure portal to allow requests from my frontend domain. Here’s a snippet of my API's CORS configuration in Startup.cs: ```csharp public void ConfigureServices(IServiceCollection services) { services.AddCors(options => { options.AddPolicy("AllowSpecificOrigin", builder => { builder.WithOrigins("https://myfrontend.com") .AllowAnyMethod() .AllowAnyHeader(); }); }); // Other services... } public void Configure(IApplicationBuilder app, IWebHostEnvironment env) { app.UseRouting(); app.UseCors("AllowSpecificOrigin"); // Other middleware... } ``` The SSL behavior continues, and I’m not sure if it’s related to the CORS setup or something else. I’ve also tried restarting the App Service and clearing my browser cache without success. Has anyone else faced a similar scenario, or can you suggest additional steps to diagnose the question? This is part of a larger web app I'm building. Is there a better approach? Has anyone dealt with something similar?