running 2008 r2 DC. I recently upgraded our IE in our citrix environment (2008 r2 w/ 6.5 xenapp) to IE 11. Now users get a blocked pop-up warning at the bottom of there screen. The website in question is internal on our domain and it runs an app. How can I allow all popups from 10.x.x.x to be allow for all users? Im assuming a GPO but where in the GPO?