How to set default compatibility modes in config file?

Answer:

If we are running a .NET site, then we can specify the default Compatilbility View for our entire site in the CustomHeaders section of our Web.config file as follows:-

<customHeaders>

<clear />

<add name="X-UA-Compatible" value="IE=9" />

</customHeaders>

if we have access to IIS,then we can specify the Compatibility View meta tag using a custom HTTP response header.