Every time I try to open Outlook, the message appears.

Question

Answer 1

Hi @Mostafa Mahmoud

Thank you for posting your question in the Microsoft Q&A forum.   

Please understand that our forum is a public platform, and we will modify your question to cover your information in the description. Please notice to hide your personal information next time you post error or some information to protect personal data.  

Based on your inquiry, we understand that you have received an announcement about the Error code and cannot accesso Outlook. We will be glad to assist you in this part.   

I would like to make a brief summary issue of this thread:  [UserHasNoMailboxAndNoLicenseAssignedError] 

This error cautioned by your account does not have a valid license or mailbox assigned to it. Ensure that the user has an appropriate license assigned. To resolve this issue, you can try the following steps: 

Contact your Admin in your Organization and ask them to re-check your license again and your account in mailbox status in Admin Center : 

• Go to  Admin Center - User - Active Users 
• Select your account. 
• Check your user license assigned 

You might also suggest your admin to check the license payment status to see if there are any issues with your subscription  

1. Go to Admin Center ->Billing 
2. Your Product -> Select the license ( check status Active or Expired) 

If you need further assistance, please let us know.  

---

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.