Response to preflight request doesn’t pass access control check

ASP.Net JSON Call

Response to preflight request doesn’t pass access control check: No ‘Access-Control-Allow-Origin’ header is present on the requested resource. Origin ‘http://localhost’ is therefore not allowed access.

Solution:

<system.webServer>
<httpProtocol>
<customHeaders>
<add name=”Access-Control-Allow-Origin” value=”*” />
<add name=”Access-Control-Allow-Headers” value=”Content-Type” />
</customHeaders>
</httpProtocol>
</system.webServer>

 

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