: Change the ribbon, menus, and help documentation to Arabic.

: Organizations using volume licenses can download full ISO images of language packs from the Volume Licensing Service Center (VLSC) . Installation Steps

: Download from the Microsoft Language Accessory Pack Page by selecting the "Office 2016" tab.

For a 32-bit (x86) installation of Office 2016, you must download the corresponding 32-bit language accessory pack. Using the 64-bit version on a 32-bit Office installation will result in a compatibility error.

Guide to Microsoft Office 2016 Arabic Language Pack (32-bit)