System Issues/Outage
Microsoft Update at Microsoft service health status at 6:00pm on Friday, November 13:
Current status: We continue to observe sustained service recovery across the previously affected environments. Due to the severity of impact this incident caused, we’re monitoring for an extended period to ensure no additional mitigative actions are required. In parallel, we’re monitoring the backlog of email messages accrued during this event to ensure all process successfully before considering the issue resolved.
We’re addressing all impact scenarios for dependent and related Microsoft 365 products as listed in the “More info” section of the Microsoft service health status, and believe the majority of those impacted scenarios have been addressed.
Microsoft Update at Microsoft service health status at 9:00am:
Current Status: We’re continuing to see improvements in service availability, with email queues significantly reduced and approaching normal levels. Some users may still experience intermittent access issues or delayed email delivery as recovery continues
Microsoft Update at Microsoft service health status at 7:00am:
At UTC we have started to see improvement in access to Outlook and email delivery as of 7am. However, intermittent issues may still occur this morning.
Current status: We’re seeing encouraging recovery progress in Europe, with service availability and email delivery performance improving across a growing portion of affected Microsoft 365 infrastructure. Japan remains comparatively more stable, while North America is also improving; however, some users may still experience intermittent issues as recovery actions continue.
We’re focused on addressing the remaining areas of disruption and improving service consistency across affected regions. Reducing email queues and backlogs remains a priority, and the extended 48-hour email timeout window remains in place to help protect delayed messages as delivery catches up.
Next update by: Friday, November 13, 2026, at 8:00 AM
Microsoft Update at Microsoft service health status at 6:20am:
Services are still expected to be offline at this time.
Features of the Microsoft 365 services below that interact with Exchange Online and email services are impacted. Elements of those services that do not depend on interaction with Exchange Online remain functional.
Current status: We’ve made progress toward service recovery, with recovery actions completed across portions of the affected infrastructure in the Asia Pacific region. Traffic is being gradually restored, and we’re seeing improvements in key customer scenarios, including mailbox access and delayed email processing. .
Our focus is now on extending these recovery actions across affected infrastructure in other regions (North America, etc), while continuing stabilization efforts and adding supporting capacity to improve service consistency.
Reducing email queues and backlogs remains a priority, and the extended 48-hour email timeout window remains in place to help protect delayed messages as delivery catches up.
Microsoft Update at Microsoft service health status:
Current status: We’re applying infrastructure capacity improvements where possible in an effort to help support traffic in regions coming online. We’re continuing to monitor the results of changes applied so we can identify strategic actions that can help to improve service health across all affected regions.
Next update by: Thursday, November 12, 2026, at 11:00PM EST
Microsoft Update at Microsoft service health status:
User impact: Users may be unable to connect to multiple Microsoft 365 services.
More info: Potentially impacted services include:
– Exchange Online
– Microsoft Teams
– SharePoint Online
– Microsoft Copilot 365
– Microsoft Defender XDR
– Microsoft Planner
– Microsoft To Do
– Microsoft Intune
– Microsoft Defender for Office 365
– Microsoft Purview: Multiple Purview services including Authorization, Auto Labelling, Data Loss Prevention (DLP), Communication Compliance, and Data Classification are impacted.
– Power BI: All users may intermittently be unable to export reports with MIP sensitivity labels to PDF in Power BI.
– Microsoft 365 Apps Admin Center: Multiple services including Cloud Update, Cloud Policy, and Inventory.
Current status: We’re continuing to pursue all available pathways to restore service, as our actions taken thus far have not provided the anticipated relief. Our investigation has found that a core process on the affected servers is becoming overwhelmed, which causes the servers to stop responding and contributes to the capacity loss.
To validate a potential recovery approach, we’re fully isolating a portion of our service infrastructure, restarting the affected components, and gradually reintroducing traffic to confirm our services remain stable before applying this approach more broadly. We’re also analyzing traffic patterns across our entire service infrastructure and evaluating whether isolating traffic within each region may allow affected regions to recover independently.
Previous status: 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.
Scope of impact: This issue may affect users attempting to access the affected Microsoft 365 services.
Next update by: Thursday, November 12, 2026, at 6:30 PM
Microsoft Update at Microsoft service health status:
User impact: Users may be unable to connect to multiple Microsoft 365 services.
More info: 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.
Scope of impact: This issue may affect users attempting to access the affected Microsoft 365 services.
Next update by: Thursday, November 12, 2026, at 5:00 PM
Microsoft Update at Microsoft service health status:
User impact: Users may be unable to connect to their mailboxes in Exchange Online through multiple connection methods.
More info: Potentially impacted connection methods may include:
– Outlook on the web
– Messaging API (MAPI)
– Exchange ActiveSync (EAS)
– Representational State Transfer (REST) API
Current status: We’ve identified connectivity errors occurring on a portion of Exchange Online infrastructure which receives and processes users’ access requests. We’ve collected networking logs to review to further investigate the source of these errors and confirm our next steps.
Scope of impact: This issue may affect users attempting to access their mailbox in Exchange Online using the affected connection methods.
Next update by: Thursday, November 12, 2026, at 3:00PM EST
Issue Reported at 12:45pm on November 12: Microsoft has identified an issue that is causing connectivity problems with Outlook today. As a result, you may experience issues accessing Outlook and other Microsoft 365 applications this afternoon. We will provide an update here as soon as Microsoft provides more information or resolves the issue.
