Hi Nikhil,

Great article how to remove these headers - https://www.saotn.org/remove-etags-http-header-iis/

Thanks,

Alex

Thanks Alex.

Yahoo says: "The problem with ETags is that they typically are constructed using attributes that make them unique to a specific server hosting a site. ETags won't match when a browser gets the original component from one server and later tries to validate that component on a different server, a situation that is all too common on Web sites that use a cluster of servers to handle requests. By default, both Apache and IIS embed data in the ETag that dramatically reduces the odds of the validity test succeeding on web sites with multiple servers."

So this is an issue with sites having multiple servers.

For the ImageProcessedBy header I added:

<rewrite>
    <outboundRules>
        <rule name="Remove ImageProcessedBy header value">
            <match serverVariable="RESPONSE_ImageProcessedBy" pattern=".+" />
            <action type="Rewrite" replace="true" />
        </rule>
    </outboundRules>
</rewrite>

This blanked out the value of the header but did not remove it.

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