Hi @حسين الغريبي Hussain Alghiribi,
Does this issue affect other users in your environment?
Are you using Exchange Online in your organization?
For current situation, please click "Sign in with other options" and see if the user is able to sign in with an alternative verification method.
Besides, please click "Error details" and see if there are more information for further analysis.
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.