If you use reporting services though a report viewer control then you might be missing the print button when viewing in IE11.
To fix this, install the latest reportwiewer.exe.
This will return the print button but annoyingly it also changes the colour scheme and toolbar layout. It’s actually a nicer colour scheme but it might not fit with your page in both size and colour.
Direct download location=
or if you don’t trust links, go to http://www.microsoft.com
and search for “MICROSOFT® REPORT VIEWER 2012 RUNTIME”