Troubleshooting
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      No "Access-Control-Allow-Origin" Error when downloading a stream

      Issue

      The following message appears e.g. when downloading a stream:

      XMLHttpRequest cannot load HYPERLINK "http://...:8080/.../$value"
      No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'HYPERLINK "http://localhost'%20is%20therefore%20not%20allowed%20access/"http://localhost' is therefore not allowed access
      Solution

      You have to add the "Access-Control-Allow-Origin" header attribute to the response. To to this paste the following into your download functionality:

      WebOperationContext.Current.OutgoingResponse.Headers.Add("Access-Control-Allow-Origin", "*");