Microsoft Office 2016 Japanese Language Pack. If the Keyboard layout and the Proofing column show "Not installed" then you have to download the language accessory pack from Microsoft. The problem comes when you want to work in more than one language on the same system in which.
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Here is how to download and configure Office Language Packs.
Microsoft Office is truly an international software as it gives you the power to change its language to whatever suits you best. If the Keyboard layout and the Proofing column show "Not installed" then you have to download the language accessory pack from Microsoft. That's usually what users of the program want, but some users may want it It is a good idea to check the available options in Office directly first before you start installing new language packs for the application.