SEP 12.1 has introduced 64-bit and 32-bit drivers for all of the sub-components, and consequently can correctly advertise that all features and components are fully functional on both 32-bit and 64-bit Operating systems.

The Microsoft Outlook Email Plug-in remains a 32-bit module with full WoW (Windows on Windows) compatibility to enable it to run on 64-bit platforms. However, as a 32-bit module plugging into the MAPI interconnector for Microsoft Outlook, the Outlook Email plug-in will be directly impacted by the Microsoft 64-bit incompatibility issues. MAPI applications include stand-alone applications such as Microsoft Lync, Microsoft Office Communicator, and MFCMAPI, and service providers such as address book, store, and transport providers. For MAPI method and function calls to work in a MAPI application, the bitness of the MAPI application must be the same as the bitness of the MAPI subsystem on the computer on which the application is targeted to run. The bitness of the MAPI subsystem, in turn, is determined by and is always the same as the bitness of the installed version of Outlook. Consequently, the 64-bit version of Microsoft Outlook 2010 will not load the 32-bit MAPI module responsible for performing the Outlook Email Scanning within the SEP Product.