@Trần Viễn Phúc , From your description, it seems you have issue with Microsoft 365 which is different with Windows 365 (Windows 365 is a cloud-based service that automatically creates a new type of Windows virtual machine Cloud PCs for your end users). You can contact Microsoft 365 support in the following forum to get help:
https://answers.microsoft.com/en-us/msoffice/forum?sort=LastReplyDate&dir=Desc&tab=All&status=all&mod=&modAge=&advFil=&postedAfter=&postedBefore=&threadType=All&isFilterExpanded=false&page=1
Thanks for your understanding.
If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.