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Configuring CORS via IIS web.config When hosting an ASP.NET Core application on Internet Information Services (IIS), you can manage Cross-Origin Resource Sharing (CORS) settings directly through the web.config file. This approach is effective when you want the web server to handle preflight requests and header injections before they reach the a ...

<p>When integrating a frontend application hosted on a separate origin with an ASP.NET WebAPI backend, Cross-Origin Resource Sharing (CORS) policies often block requests. This is particularly common when the client requires authentication credentials. The browser enforces specific security checks during the preflight process, and failure ...

To properly handle custom errors in ASP.NET, it's essential to avoid using the web.config customErrors element. The major drawback of using web.config customErrors is that it redirects when displaying custom error pages: http://www.example.com/error/error.htm?aspxerrorpath=/somepage/p/12345.html This creates two issues: 1. ...