By default, IE11 has the option 'Display intranet sites in Compatibility View' (under Compatibility View settings) enabled by default. This breaks pages that load HTML5 and fails to load them.
The work around is to disable this feature:
-In IE click on the gear icon in the top right (or press alt-x)
-Select 'Compatibility View settings'
-Uncheck 'Display intranet sites in Compatibility View' and click 'Close'