Is there an ETA on the current outlook outage?

Vineet Chauhan 0 Reputation points
2026-11-13T05:35:59.7+00:00

I have not been able to send or receive my emails since last night. Also my shared mailbox is not connecting to the outlook. Is there any ETA on the resolution?

Outlook | Windows | Classic Outlook for Windows | For business
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  1. Elena-VH 2,615 Reputation points Independent Advisor
    2026-11-13T05:38:53.4+00:00

    Dear Vineet Chauhan,

    I understand your concern. In this case, I would like to share an update regarding the connectivity issue affecting multiple Microsoft 365 services.

    According to Microsoft's notification (Incident ID: MO1550821), users may be unable to connect to or access multiple Microsoft 365 services, including the Microsoft 365 suite, Microsoft Copilot, Exchange Online, Microsoft Teams, SharePoint Online, and Microsoft Defender XDR.

    Microsoft has identified that the affected infrastructure is experiencing elevated load across multiple regions, which is likely contributing to the connectivity errors. Microsoft is currently restarting and repairing impacted portions of the infrastructure to restore capacity. Additionally, they are investigating an unexpected increase in a specific type of service traffic and evaluating options to redirect traffic to alternative infrastructure to expedite recovery.

    The incident is currently classified as Service Degradation, and Microsoft is actively investigating and working to mitigate the issue.

    Regarding the restoration timeline and email delivery, Microsoft will provide official updates through the Service Health dashboard. I would recommend contacting Microsoft 365 business support if the issues persist or require further investigation.

    If you have Microsoft 365 administrator privileges, please sign in to the Microsoft 365 Admin Center to view the details of this issue.

    • Sign in to the Microsoft 365 Admin Center.
    • Go to Health > Service Health.
    • Search for Issue ID: MO1550821.
    • Select the issue and expand the details to review the latest updates, affected services, impact, and remediation information.

    Note: If you don't know who the admin is in your organization, you can find guidance here: How can I find my Microsoft 365 admin? - Microsoft Support    

    I'll continue to monitor this case and let you know if there are any updates.

    Kind regards.

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  2. AI answer

    2026-11-13T05:36:50.5633333+00:00

    There is currently no public ETA, although Microsoft is reporting an active Microsoft 365 service degradation that may prevent users from connecting to multiple services and could account for the Outlook send/receive failure.^1^

    The public notice does not explicitly confirm shared mailboxes in Classic Outlook as a separate affected scenario. However, the reported Exchange Online and Outlook desktop connectivity impact could also prevent a shared mailbox from connecting.

    Check the latest tenant-specific update

    A Microsoft 365 administrator should:

    1. Sign in to the Microsoft 365 admin center.
    2. Go to Health → Service health.
    3. Under Active issues Microsoft is working on, open the Exchange Online or Microsoft 365 incident.
    4. Review:
      • User Impact
      • Affected services
      • Status
      • Last updated
      • All Updates, where Microsoft posts investigation and restoration progress

    Service health can contain organization-specific details that are not included on the public status page. It is available to administrators with suitable roles, including Service Support administrator and Helpdesk administrator.^2^

    If no applicable incident appears, the administrator can select Report an issue on the Service health page. Avoid rebuilding Outlook profiles or changing shared-mailbox permissions while an applicable incident remains active; wait for Microsoft to mark the service as restored, then restart Classic Outlook and test both the primary and shared mailboxes.

    References

    1. Microsoft service health status
    2. How to check Microsoft 365 service health
    AI-generated content may be incorrect. Read our transparency notes for more information.

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