Fix No Access-Control-Allow-Origin header is present on the requested resource

The browser is blocking a cross-domain request as it usually allows a request in the same origin for security reasons.

You can simply add the following code in your web.config file of the remote site when you want to do a cross-domain request.

<?xml version="1.0" encoding="utf-8"?>
<configuration>
    <system.webServer>
        <httpProtocol>
            <customHeaders>
                <add name="Access-Control-Allow-Origin" value="*" />
            </customHeaders>
        </httpProtocol>
    </system.webServer>
</configuration>

This does not work for the .net core application.

For ASP.NET core application, please kindly refer to the below guide:

https://docs.microsoft.com/en-us/aspnet/core/security/cors?view=aspnetcore-5.0

Article ID: 1980, Created: August 31, 2018 at 8:26 PM, Modified: July 8, 2021 at 7:19 PM

Fix No Access-Control-Allow-Origin header is present on the requested resource

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