We have an enterprise application using Documentum webtop, that we are accessing through IE11
When we are using one functionality by accessing the application through IP address, it is working fine. But when we go through an assigned domain name, it is giving permission denied error in a JS and that functionality is not working.
IE11 is not supported however your problem it's that IE11 has a brand new user-agent
Mozilla/5.0 (Windows NT 6.3; Trident/7.0; rv:11.0) like Gecko
that has not MSIE inside. Old javascript can fail because of that.
Try to force compatibility mode on browser to check if an old style user agent solve your problem.