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Support Article

IE compatibility view setting problem in IE9



User is getting Compatibility View not supported pop-up on IE9 compatibility view.

Error Messages

Compatibility View not Supported pop-up.

Steps to Reproduce

Open Pega 7 in IE9 compatibility view.

Root Cause

The root cause of this problem is in a third-party product integrated with PRPC. Microsoft recomends adding 
"X-UA-Compatible" Header which is causing an issue.


This issue is resolved through the following local change:
"Add new
"X-UA-Compatible" header to PRPC cookie with below Filter Servlet"

public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {

                                // place your code here

                                // set header to override IE compatibility view setting

                                HttpServletRequest hreq=(HttpServletRequest)request;

                                String browserAgent= ""+hreq.getHeader("USER-AGENT");


                                                HttpServletResponse hres=(HttpServletResponse)response;


                                                hres.setHeader("X-UA-Compatible", "IE=Edge");


                                // pass the request along the filter chain

                                chain.doFilter(request, response);

Suggest Edit

Published January 31, 2016 - Updated October 8, 2020

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