If any Microsoft Office programs are running, the Language Settings tool notifies you and closes them automatically. The features for the language you enabled appear the next time you start an Office program.
Note Some languages ù for example, Asian, right-to-left (such as Arabic), and Central European languages ù have system requirements that must be met before you can type characters for those languages in Microsoft Office programs. If you see (limited support) next to a language in the Available languages box, you need to install system support for that language.