Update from Microsoft 365 (Business or Enterprise) Status: Service degradation 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 11:30 PM UTC
We will continue to keep you posted as we receive more information from Microsoft regarding this service degradation.
Thank you, Cetrom Support
Please share this information with your team. They can subscribe to live updates at https://status.cetrom.com/.
Posted Nov 12, 2026 - 22:38 UTC
Update
This message is from Microsoft 365 (Business or Enterprise) Status: Service degradation 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've completed redistributing connection traffic across our worldwide infrastructure, and we're moving additional traffic off the affected infrastructure to further reduce load. We're also restarting affected servers to return them to service. In parallel, we're investigating whether the elevated traffic reflects a genuine increase in requests or a shift in how traffic is being routed across our infrastructure.
Scope of impact: This issue may affect users attempting to access the affected Microsoft 365 services.
Next update by: Thursday, November 12, 2026, at 9:00 PM UTC
We will continue to keep you posted as we receive more information from Microsoft regarding this service degradation.
Thank you, Cetrom Support
Please share this information with your team. They can subscribe to live updates at https://status.cetrom.com/.
Posted Nov 12, 2026 - 19:09 UTC
Monitoring
We want to let you know about widely reported issues with Microsoft 365 applications today. Some users have had trouble connecting to Outlook and other Microsoft services. This appears to be a Microsoft service issue.
Our team is continuing to monitor connections, and we'll keep you posted as we receive more information and a root cause from Microsoft.
In the meantime, please be cautious with any email or text asking you to verify or reactivate your Microsoft account. Phishing attempts often follow service disruptions. If something looks suspicious, report it.
We will continue to keep you posted as we receive more information from Microsoft regarding this service degradation.
Thank you, Cetrom Support
Please share this information with your team. They can subscribe to live updates at https://status.cetrom.com/.
Posted Nov 12, 2026 - 18:30 UTC
This incident affects: Microsoft 365 (Microsoft Applications).