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TechCrunch
Microsoft 365 outage drags on, but things are improving
Microsoft is currently dealing with a significant outage affecting several Microsoft 365 services, including Outlook email, SharePoint, and Teams. The company identified the cause as a misconfiguration related to core authentication services, which impacted multiple functionalities. Despite ongoing issues, Microsoft has reported gradual improvements in service, although it has not confirmed full restoration. The company emphasized a cautious approach, stating that they are in a period of extended monitoring to ensure complete resolution of the issues.
MonitorConfidence: HighShort term horizon
Published 1 Sept 2026, 16:40 UTC2 min read
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Summary
TL;DR
- Multi-day outage affecting Microsoft 365 services.
- Key services impacted include Outlook, SharePoint, and Teams.
- The outage was caused by a misconfiguration of authentication services.
- Microsoft reported gradual improvements in service availability.
- Extended monitoring phase initiated to ensure full resolution.
Interesting facts
- The issue affected not just Outlook, but also other core services like Teams and Defender XDR.
- This outage has led to widespread delays and failures in email communication for many users.