email not working

Cheryl Golich 0 Reputation points
2026-10-23T22:03:41.1+00:00

unable to send/receive emails from my email 

UTC Date: 2026-10-23T22:01:58.563Z
Client Id: 
Session Id: 
Client Version: 20261016004.14
BootResult: configuration
Back Filled Errors: Unhandled Rejection: Error: 500:undefined|undefined:undefined
err: Microsoft.Exchange.Clients.Owa2.Server.Core.OwaUserHasNoMailboxAndNoLicenseAssignedException
esrc: StartupData
et: ServerError
estack: Error: 500
    at Object.w [as createStatusErrorMessage] (https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.mailindex.36c3d819.js:1:808)
    at https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.mailindex.36c3d819.js:5:6626
st: 500
ehk: X-OWA-Error
efe: 
ewsver: 
reqid: 
cv:
Outlook | Web | Outlook on the web for business | Sign in
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  1. Hendrix 2,770 Reputation points Independent Advisor
    2026-10-23T22:52:29.9366667+00:00

    Hi Cheryl,

    Thank you for sharing the error message.

    This diagnostic detail OwaUserHasNoMailboxAndNoLicenseAssignedException means that your account does not currently have an active Exchange Online mailbox or that an applicable license has not been assigned. This can also happen if the subscription expired or the Exchange Online service was recently turned off.

    In this case, the best next step is to contact your organization's IT department and ask for help. Your administrator needs to check under Microsoft 365 admin center > Users > Active users > your account name> Licenses and apps and confirm that a valid license is assigned to your account and that Exchange Online is also checked.

    If you are unsure who your IT administrator is, please refer to this guide: How do I find my Microsoft 365 admin?

    Hope this helps. Should you have any other questions, please feel free to share them in the comments on this post. I'm happy to assist you further.

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  2. AI answer

    2026-10-23T22:04:11.7266667+00:00

    The OwaUserHasNoMailboxAndNoLicenseAssignedException error requires your Microsoft 365 administrator to assign an Exchange Online license to your account and verify that the mailbox is provisioned.

    Assign or correct the license

    An administrator with at least the License Administrator or User Administrator role should:

    1. Sign in to the Microsoft 365 admin center.
    2. Go to Users → Active users.
    3. Select the affected user.
    4. Select Licenses and apps.
    5. Assign a product that includes Exchange Online, and ensure the Exchange Online service within that product is enabled.
    6. Select Save changes. ^1^

    If a license appears assigned but has an error:

    1. Go to Billing → Licenses and select the relevant product.
    2. Open Errors & Issues.
    3. Resolve the displayed problem, such as no available licenses, conflicting service plans, or an invalid usage location.
    4. Select the affected user and choose Reprocess to retry the assignment. ^1^

    Allow the mailbox to provision

    Mailbox creation or licensing changes normally complete in under 30 minutes but can take up to 24 hours. After assigning the license:

    1. Wait for provisioning to complete.
    2. Sign out of Outlook on the web, then sign back in.
    3. If access still fails, have the administrator run the mailbox-provisioning diagnostic in the Microsoft 365 admin center.
    4. Check Health → Service health for a relevant Exchange Online incident and resolve any user validation errors. ^2^

    The diagnostic requires a Microsoft 365 administrator and is unavailable for Microsoft 365 Government, Microsoft 365 operated by 21Vianet, and Microsoft 365 Germany.

    If the Exchange license was removed or expired

    For a regular mailbox without a hold, removing or allowing the Exchange Online license to expire immediately disconnects the mailbox. Reassign the license within 30 days to reconnect it. After 30 days, the disconnected mailbox is permanently deleted and cannot be recovered. ^3^

    Do not repeatedly remove and reassign the license as routine troubleshooting, especially if the removal date is uncertain. Assign the valid license and leave it enabled while provisioning completes.

    Escalation

    If the license is valid, no assignment error appears, and the mailbox remains unavailable after 24 hours, the administrator should open a Microsoft support request from the Microsoft 365 admin center. Include the UTC timestamp, request ID, session ID, and complete OwaUserHasNoMailboxAndNoLicenseAssignedException details from the error report. Microsoft’s provisioning guidance recommends escalation when the issue persists beyond 24 hours. ^2^

    If you are not the Microsoft 365 administrator, send the error report and these steps to the person or provider managing your organization’s Microsoft 365 subscription.

    References

    1. Assign or unassign licenses for users in the Microsoft 365 admin center
    2. Delays in provisioning of user/mailbox or synchronizing changes in Exchange Online
    3. Can't access the mailbox of an unlicensed user in Exchange Online
    AI-generated content may be incorrect. Read our transparency notes for more information.

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