SOLVED: (sort of) Internet Explorer 11 Uses ‘Light Mode’ Reduced Functionality for OWA Webmail
If you have upgraded to Windows 8.1, you are now using Internet Explorer 11. OWA (from Exchange 2007, 2010 or even the new 2013) does not work properly with IE11 does not work in full mode. UPDATE: January 2014 This problem should be resolved in: UPDATE ROLLUP 3 FOR SERVICE PACK Read more…