How to remove duplicate Cache-Control property from response headers

Question

I need to remove duplicate entries of one property of response headers "Cache-Control"

I actually want Cache-Control to come as private hence I went to IIS settings and went to the desired folder and added a customer http response header value as

"Cache-Control" with value as "private"

Now I am viewing as "no-cache,private" as its value when I see a request from my fiddler properties.

I need to do it from IIS level.

Any inputs?

Answer 1

Based on the screen shot and my previous experiences, I could assume that u have set the Variable name in creating OutBound rule in IIS settings as RESPONSE_SERVER. Please try creating the Variable Name as "RESPONSE_Cache-Control" without quotes and the value as "Private" without quotes.