Cannot remove response headers (Access-Control-Allow-Origin)

Support Operation and Testing
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Hi Luan,

  1. I’m facing the issue when using swagger UI to send request on web browsers (IE, FF,Chrome). The request was sent to Tyk and Tyk responded to client successfully but with 2 Access-Control-Allow-Origin header values hence the browser prevented getting the body response and threw above error.
  2. You mean that I should remove 1 Access-Control-Allow-Origin header value? I did so with “Modify Header” plugin in endpoint designer but without success in TYK dashboard 1.5.0. See below pic:

modifyheader
modifyheader.PNG1106×534 28.6 KB

Thanks,
Toan Do