Unable to access multiple Microsoft 365 services in the Brazil region
ID: MO1147126
Issue type: Incident
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Impacted services
Microsoft 365 suite
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Details
Title: Unable to access multiple Microsoft 365 services in the Brazil region
User impact: Users may have been unable to access multiple Microsoft 365 services.
More info: Users attempting to access Microsoft 365 service may have experienced latency or degraded feature performance.
Final status: We've identified an infrastructure change in the Brazil South region that caused intermittent access and performance issues. After redirecting network traffic, we've confirmed through system telemetry that service health has been restored.
Scope of impact: Impact was specific to a subset of users who were accessing the service from Brazil.
Start Time: Wednesday, September 3, 2025, at 1:55 PM UTC
End time: Wednesday, September 3, 2025, at 2:20 PM UTC
Root Cause: A change made to service infrastructure in the Brazil South region caused intermittent access and performance issues.
Next Steps:
- We're reviewing component change testing and validation procedures to identify and prevent future issues from moving forward.
This is the final update for the event.
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