: Many older third-party COM add-ins and macros are designed for 32-bit Office. These will not work on the 64-bit version unless they have been explicitly updated by the developer.
: Improved Presenter View , giving the speaker a private dashboard with notes, timers, and upcoming slides while the audience sees only the presentation. Office 2013 64 Bits
Windows 7, Windows 8, Windows Server 2008 R2, or Windows Server 2012 : Many older third-party COM add-ins and macros
: Support for Office 2013 officially ended on April 11, 2023 . This means Microsoft no longer provides security updates, technical support, or bug fixes. Windows Server 2008 R2