QnA forums are currently English only forums. They're actively answering questions in dedicated forums here.
https://answers.microsoft.com/ja-jp/msoffice/forum/msoffice_account
https://social.technet.microsoft.com/Forums/ja-JP/home?category=officejp
--please don't forget to Accept as answer if the reply is helpful--
Regards, Dave Patrick ....
Microsoft Certified Professional
Microsoft MVP [Windows Server] Datacenter Management
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