How to enable CORS for IE 11 -- Process CORS request Assertion is not working on APIM gateway

Document ID : KB000072498
Last Modified Date : 12/07/2018
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Introduction:
Symptoms:
The IE11 aborted the cors preflight request, and IE developer console shows error, 
XMLHttpRequest: Network Error 0x80070005, Access is denied 

If run tcpdump on gateway, the tcpdump file shows that the cors preflight request cannot reach gateway as it is aborted/blocked by IE11
 
Root causes:
IE11 disable CORS by default, and may not trust the domain.
Instructions:
  1. Add all the domain in the Trusted sites zone or Local intranet zone
  2. Enable CORS for the security zone.
IE security settings