Multiple Microsoft 365 services Global Outage

The latest updates from Microsoft, what we're seeing ourselves and in other reports online suggest this incident is now mostly resolved. Unless the picture changes negatively we will not post any further updates this weekend via our status page. We will check again on or before Monday morning to confirm resolution before posting a final update here.

Further status information is available directly from Microsoft here:

https://status.cloud.microsoft/m365

Latest update timed 20:01 GMT:

As infrastructure stabilizes, we're still draining queued messages and rebalancing traffic, so customers may see improved sign-in/access while delivery and processing continue to catch up. We do not have an ETA for full recovery yet. Service access can recover before mail flow fully normalizes.

Earlier update timed 15:57 GMT:

We are deeply sorry for the disruption this incident has caused you and your business. We know the trust you place in our services and take that responsibility extremely seriously.

We are seeing broad recovery and stability across our services. This was a technical issue not related to cyber or AI / agents.

The incident was introduced by an issue during an earlier network capacity upgrade that surfaced following a recent network change. We have addressed the underlying issue and continue to restore service to remaining customers and regions.

Given the scale of demand, we restored services gradually, validating stability at each stage. While this took longer, it helped ensure a stable restoration. We will provide a full post-incident report once our review is complete.

Microsoft update from 15:52:

We remain focused on addressing residual impact and ensuring reliable service restoration. We continue to assess recovery across various connection methods and closely monitor service health to verify sustained stability.

At this time, we have no evidence of malicious activity associated with this incident. We will continue to treat this with urgency until full mitigation, and we will share a full Post-Incident Report with root cause and defense-in-depth actions after mitigation is complete.

Microsoft update from 14:55:

We're observing sustained improvements in service availability as recovery progresses across affected Microsoft 365 services. While service functionality continues to improve, some users may still experience intermittent connectivity issues or delayed email delivery.

Our efforts are increasingly focused on resolving the remaining issues and restoring consistent service for all affected users. We're validating recovery across different connection methods and monitoring service stability to confirm that improvements are sustained.

At this time, we have no evidence of malicious activity associated with this incident. We will continue to treat this with urgency until full mitigation, and we will share a full Post-Incident Report with root cause and defense-in-depth actions after mitigation is complete.

Update from Microsoft 14:01:

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.

We've implemented additional mitigation measures and are restoring the remaining affected infrastructure while investigating residual service issues. We're closely monitoring service health and validating recovery across affected connection methods to ensure sustained service stability.

At this time, we have no evidence of malicious activity associated with this incident. We will continue to treat this with urgency until full mitigation, and we will share a full Post-Incident Report with root cause and defense-in-depth actions after mitigation is complete.

Update from Microsoft at 12:59:

We're seeing continued recovery progress across affected regions, with broader improvements now observed in North America and sustained improvements across much of Europe. We're also seeing encouraging recovery signals in Asia Pacific, although some users may continue to experience intermittent access issues or delayed email delivery as mitigation progresses across the remaining affected infrastructure.

Our focus remains on stabilizing recovered infrastructure, completing mitigation in the remaining impacted areas, and reducing delayed email queues and backlogs. We're closely monitoring service consistency and validating recovery across different connection methods as we work toward full mitigation.

At this time, we have no evidence of malicious activity associated with this incident. We will continue to treat this with urgency until full mitigation, and we will share a full Post-Incident Report with root cause and defense-in-depth actions after mitigation is complete.

Latest update from Microsoft matching what we're seeing on the ground:

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.

At this time, we have no evidence of malicious activity associated with this incident. We will continue to treat this with urgency until full mitigation, and we will share a full Post-Incident Report with root cause and defense-in-depth actions after mitigation is complete.

No further update from Microsoft yet but the BBC are reporting via a Microsoft statement that "encouraging recovery progress in Europe" is being made. We are also seeing some email service recovery ourselves and for some customers. Teams at Wessex IT appears to be functioning normally.

Update from Microsoft at 11:01:

We've made additional 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. However, some users may continue to experience intermittent issues.

Our focus is now on extending these recovery actions across affected infrastructure in other regions, 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.

At this time, we have no evidence of malicious activity associated with this incident. We will continue to treat this with urgency until full mitigation, and we will share a full Post-Incident Report with root cause and defense-in-depth actions after mitigation is complete.

There have been reports of scammers calling people purporting to be from Microsoft asking if you have issues with your Microsoft services - please hang up on these calls immediately.

Update 0957 posted was identical. Next update expected by 1100:

Recovery actions are ongoing and have progressed in phases across affected Microsoft 365 infrastructure. Global telemetry and customer reports show incremental improvement in several workloads; however, service health remains variable and capacity has not yet fully returned to baseline.

Network and traffic-management actions remain active. To protect email during recovery, we’re continuing to prioritize queue and backlog processing, and the email timeout window has been extended to 48 hours to preserve delayed messages.

At this time, we have no evidence of malicious activity associated with this incident. We will continue to treat this with urgency until full mitigation, and we will share a full Post-Incident Report with root cause and defense-in-depth actions after mitigation is complete.

Latest from Microsoft at 0903 with a following update expected by 1000:

Recovery efforts are ongoing across impacted infrastructure. We are seeing early signs of stabilization, but service capacity has not yet returned to normal levels and health remains variable as traffic is carefully reintroduced. Our primary mitigation path continues to focus on service stability and controlled recovery. Engineering teams are cycling affected infrastructure through traffic drain, restart, remediation, and staged return-to-service while monitoring closely. We are also evaluating additional mitigation options to improve recovery speed and consistency.

Network and traffic-management actions remain in progress, and we continue to prioritize backlog and queue health to preserve delayed mail during recovery. As part of this effort, we are extending the email timeout window to 48 hours to help protect delayed messages while service recovery continues.

At this time, we are not aware of any malicious activity causing this incident. We will continue to treat this with urgency until full mitigation, and we will share a full Post-Incident Report with root cause and defense-in-depth actions after recovery is complete.

Microsoft announced a global outage with multiple Microsoft 365 services via X at 17:54 on 12/11/2026. Currently we do not have an estimated time for resolution.

Microsoft 365 services affected:

• Exchange online/Outlook
• 365 apps
• Microsoft Defender for Office 365
• Microsoft Defender for XDR
• Microsoft Fabric
• Microsoft Graph
• Microsoft Intune
• Microsoft Planner
• Microsoft Power Apps
• Microsoft Purview
• Microsoft Teams
• Microsoft To Do
• Power BI
• SharePoint
• Windows 365