該使用者的本機信箱尚未遷移到 Exchange Online

Question

This user's on-premises mailbox hasn't been migrated to Exchange Online. The Exchange Online mailbox will be available after migration is completed.

如何在不設定混合環境的情況下設定郵箱？

Answer 1

使用同步規則編輯器在雲端將 msExchMailboxGUID 屬性設為 NULL，同時在本機保持不變。

https://support.rhipe.com/portal/en/kb/articles/how-can-i-set-msexchmailboxguid-attribute-to-null-1-10-2019#Answer