Hi @Graham, Thad,
Thank you for posting your question in the Microsoft Q&A forum.
Based on your description, I understand that you're encountering the error "UserHasNoMailboxAndNoLicenseAssignedException - The account has no mailbox or license assigned" when trying to access your school email via Outlook. This issue is preventing you from accessing your inbox, even though your account is still recognized by the system.
Is my understanding correct?
This issue persists in your New Outlook, right? Could you please help me check in Outlook on Web to see if this has the same problem like in New Outlook?
I noticed you've tagged this with "education," so could you confirm if you're a student account from a school, meaning you're an end-user and not an IT-admin, right?
This error typically stems from one or more of the following:
- Missing Exchange Online License: Your account might not have a Microsoft 365 license that includes Exchange Online, which is required to access Outlook Web.
- Mailbox Not Provisioned: Even if a license is assigned, the mailbox might not have been properly created or provisioned in the backend.
- Recent License Changes or Migration: If your organization recently changed license plans or migrated tenants, mailbox provisioning may have been interrupted.
- Shared Mailbox Misconfiguration: If your account is tied to a shared mailbox, direct login may not be supported unless properly configured.
If you are edu account (end-user account), please help me check the "license assigned" status:
Sign in to: https://portal.office.com/account/?ref=Harmony
Go to My accounts > Subscriptions > View Subscriptions.
Then, take a look to see if an Exchange Online license is assigned to you.
The reason I can't check this for you is that I'm just a moderator, providing support via the community. I don't have the tools to access customer accounts due to security reasons. Furthermore, if your account is an educational one, your school created your email account and other services for you. Microsoft designed its systems so that organizations (like schools) have full control over their own users' data and accounts. Microsoft can't just go in to fix the lock without permission or a request from your organization.
If you can't check, you can take a screenshot of the Subscriptions section and send it to me.
If you check and confirm that there's no Exchange license assigned, please contact your IT Admin to have them assign the license to you. As explained above, only your school's IT Admin has full control over your account and can do this.
If you're unsure who the IT Admin is within your school's organization, you can find guidance on locating them here: How do I find my Microsoft 365 admin? - Microsoft Support.
You can also send them the following Microsoft reference to help them: Assign or unassign licenses for users in the Microsoft 365 admin center - Microsoft 365 admin | Microsoft Learn
After assigning or refreshing the license, allow 1-2 hours for the mailbox to be provisioned, then try accessing it again.
Once you've checked the license or contacted your IT Admin and reassign them, help me try to sign in again and let me know the result. If you've concern or any problems, I can provide next steps.
Looking forward to your reply!
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