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Microsoft Exchange Online outage causes email failures, auth issues
August 31, 2026 · BleepingComputer · Severity: MEDIUM
Microsoft is investigating a widespread service issue causing authentication issues, email delays and failures, and various other issues for Exchange Online customers.
Key Takeaways
- Microsoft Exchange Online is currently experiencing a widespread service outage.
- The outage causes authentication issues and email delays or failures.
- Microsoft is actively investigating the cause of the service disruption.