Cross-Site HTTP Requests

A request for data from a different server (other than the requesting page), are called cross-site HTTP requests.

Cross-site requests are common on the web. Many pages load CSS, images, and scripts from different servers.

In modern browsers, cross-site HTTP requests from scripts are restricted to same site for security reasons.

To allow Cross-site requests to your api, add the following package


In program.cs add the line


Add add the next line after your app is build (var app = builder.Build())

app.UseCors(<br>options => options.WithOrigins("https://localhost:7219").AllowAnyMethod());


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