SEC7120: Origin not found in Access-Control-Allow-Origin header

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Error: SEC7120: Origin not found in Access-Control-Allow-Origin header

Environment:
IIS-7
PHP

In our one of client site we are facing above issue. To encounter above issue we modify our web config file as mentioned below.

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

Download Web.config

Original Post