アマゾン エディオン ジョーシン ビックカメラ ヤマダデンキ ヨドバシカメラ Add-ins and other extensibility solutions that are compatible with volume licensed versions of Office 2019 will most likely be compatible with Office LTSC 2021 or will require only minimal testing. *Your use of the media creation tools on this site is governed by the https://microsoftoffice2021standa41963.popup-blog.com/28384798/di-microsoft-office-365