We've validated an alternative health check method on a subset of affected infrastructure, which allowed the servers in that subset to successfully return to service, and we're now applying this change more broadly. We're also preparing an automated recovery process to continually detect and restart unresponsive servers, to help keep them in service while this change progresses. Additionally, our review of recent changes has identified a small number of configuration updates that we're investigating as potential contributors to the issue.
We're continuing to work through restarting and validating the affected servers to safely return them to service, and we're exploring opportunities to expedite this process. In parallel, we're assessing whether reverting the small number of recent configuration updates we identified could help accelerate recovery. Real-time updates can be viewed on their status page: https://status.cloud.microsoft/
We will be making updates as new information becomes available and at 3-hour intervals. Thank you again for your patience.
Posted Nov 12, 2026 - 12:44 AKST
Update
Microsoft has published the following update:
Users may be unable to connect to multiple Microsoft 365 services.
Potentially impacted services include: - Exchange Online - Microsoft Teams - SharePoint Online - Microsoft Copilot 365 - Microsoft Defender XDR
Current status: We're aggressively pursuing all pathways to reduce impact. As a precaution, we've paused all deployments and configuration changes while we review recent changes for any correlation to this event. We've determined that the elevated load isn't driven by an overall increase in traffic, but by a large number of servers being unexpectedly unavailable, which is shifting load onto the remaining infrastructure. We're investigating what's causing these servers to become unavailable while we work to safely return them to service.
We will be making updates as new information becomes available and at 3-hour intervals. Thank you again for your patience.
Posted Nov 12, 2026 - 11:09 AKST
Investigating
Microsoft is currently investigating an active service disruption preventing users from accessing Exchange Online mailboxes through multiple connection methods. Microsoft has confirmed that the underlying issue may affect broader Microsoft 365 service connectivity for users.
While desktop Office applications appear to be functioning normally at this time, web-based functions, cloud-dependent add-ins, and live syncing features may fail to connect.
We will be making updates as new information becomes available and at 3-hour intervals. Thank you for your patience during the resolution of this issue!