Generally we need to apply
some bundle patches (Patch
23703041 &  Patch 18277370) to
make compatible of OBIEE 11g with IE11.  
But we can avoid applying
patches , instead small change in iecommon.xml file will make this work.   
1. Please navigate to below
path: [Middleware
Home]\Oracle_BI1\bifoundation\web\display\featuretables\iecommon.xml 
2.  Take a
backup of  iecommon.xml file. 
3.  Change
default value ie. "IE=100" to "IE=10" 
from
<meta http-equiv="X-UA-Compatible" content="IE=100" >
to
<meta http-equiv="X-UA-Compatible" content="IE=10" >
4. Restart the
Presentation Services and clear browser cache after making changes. 
NOTE: Informatica Admin Console will work in IE11 if we enable compatibility mode for that server.
Enjoy and stay well!!
:)