A number of sites struggle to be viewed by IE when this is run in compatibility mode, by default all internal sites are run in this mode and you may need to turn this off. 


Remove compatibility view for intranet sites:


  1. In internet explorer click on tools (if this is not visible press the left ALT key)
  2. Compatibility View Settings


  3. On the Compatibility view settings, un-tick Display intranet sites in compatibility view


  4. Click Close