I am not seeing any errors related to the CORS in console.I have logged the response headers from app but am not seeing any errors in the logs. @davidjgonzalezzzz Please suggest.  

What sort of Application is this exactly? (SPA, Desktop app, mobile app?) -----Its a Desktop application Either way, this certainly sounds like what other mentioned, likely at an issue with:* CORS -- Have verified with 6.4 configuration's it looks same and in the vanila instance of 6.5 looks same th...

Yes you are right.@davidjgonzalezzzz 

I am trying with single publish instance.

when am trying to access the API in publisher and Akamai url am getting the output with the success. Whem am trying to perfrom operation in application for all the post calls am seeing the 204 issue.@davidjgonzalezzzz 

Am able to access the servlets directly with IP and Akamai URLS. Only handshake with POST calls throwing 204. @davidjgonzalezzzz Please let me know still if i miss anything.

Am not seeing any of my servlet request is getting tracked in the above.@davidjgonzalezzzz Please suggest if anything i am missing here. Thanks,Santhosh

@davidjgonzalezzzz Please let me know still am facing the same issue and let me know if i miss something.

 I have did all the above but still am seeing the same issue.

Please find the attached scree-shot and not able to see any post method in the requests.