Outlook not working

Maryann Rosser 0 Reputation points
2026-11-13T01:00:56.3766667+00:00

How soon can we expect Outlook to be back up. My entire company is down.

Outlook | Web | Outlook on the web for business | Email
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  1. Ana Le 2,975 Reputation points Independent Advisor
    2026-11-13T01:19:01.5666667+00:00

    Hi Maryann,

    I’m sorry your entire company is unable to use Outlook. I understand how disruptive this is when your team depends on email to work. I don’t have a confirmed restoration time to share, and I don’t want to give you an estimate that may be inaccurate.

    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 Exchange Online, Microsoft Teams, SharePoint Online, Microsoft Copilot, 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.

    The status provided in this update is Service Degradation. Please ask your Microsoft 365 administrator to check this link for the latest incident update to confirm whether it applies to your organization and whether a recovery estimate has been posted.

    As the forum’s AI recommended, your administrator can check this in the Microsoft 365 admin center:

    • Sign in at https://admin.microsoft.com.
    • Go to Health > Service health.
    • Search for MO1550821 and open the incident details.
    • Review All Updates for the latest recovery progress and any estimated restoration time, if provided.

    If you are not an administrator, please contact your company’s IT team to check this for you. The next-update time in an incident notice is when Microsoft expects to provide another update; it is not necessarily the time service will be restored.

    Microsoft’s guidance - How to check Microsoft 365 service health - Microsoft 365 Enterprise | Microsoft Learn

    If the admin center is also inaccessible, you can check Microsoft’s public service status page: https://status.cloud.microsoft

    Kind regards.

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  2. AI answer

    2026-11-13T01:02:11.82+00:00

    A Microsoft 365 administrator should check Admin center → Health → Service health → Exchange Online; the active incident’s updates are the authoritative place to find Microsoft’s current restoration status and any estimated recovery time.^1^

    No reliable restoration time can be confirmed externally for your company’s tenant.

    Check the incident and recovery estimate

    1. Sign in to the Microsoft 365 admin center with an account assigned an appropriate admin role.
    2. Select Health → Service health.
    3. Under Active issues Microsoft is working on, open any incident affecting:
      • Exchange Online
      • Outlook on the web
      • Mailbox access or message delivery
    4. Review:
      • Status
      • User Impact
      • Last updated
      • All Updates

    Microsoft posts investigation progress, mitigation work, and confirmation of restoration there. A status of Restoring service means corrective action is being applied; Extended recovery means recovery may take time to reach every affected system.^1^

    If the admin center itself is unavailable, use Microsoft’s public service status page linked from the same documentation.^1^

    If Microsoft lists an active incident

    Avoid changing Outlook profiles, licenses, DNS, or tenant settings unless the incident notice specifically instructs you to do so. Monitor All Updates for the next-update time and recovery estimate.

    An administrator can also open the incident and select Manage notifications for this issue to receive status updates by email.^1^

    If no incident appears

    Because the entire company is affected, report it from the Service health page:

    1. Select Report an issue.
    2. Identify Exchange Online/Outlook on the web.
    3. Include the approximate start time, affected-user count, regions, exact errors, and whether sending, receiving, and sign-in all fail.

    Microsoft correlates these reports across organizations and adds an incident or advisory when it identifies a service-side problem.^1^

    For immediate escalation, an administrator can select Help & support in the admin center, enter the outage details, and then choose Contact Support. If all subscriptions were purchased through a Microsoft partner, contact that partner instead.^2^

    References

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

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