Some users may be unable to access Office.com or the Microsoft 365 Copilot web sign‑in page
ID: MO1253428
Issue type: Incident
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Status
Service Degradation
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Impacted services
Microsoft 365 suite, Microsoft Copilot (Microsoft 365)
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Details
Title: Some users may be unable to access Office.com or the Microsoft 365 Copilot web sign‑in page
User impact: Users may be unable to access Office.com or the Microsoft 365 Copilot web sign‑in page.
More info: The impacted Microsoft 365 Copilot web-clients are office.com/chat and m365.cloud.microsoft/chat.
Users can access Microsoft Copilot through application-based Microsoft Copilot services. This includes, but is not limited to:
- Microsoft Copilot desktop app
- Copilot in Microsoft Teams
- Copilot in Office apps
Current status: We've identified that a section of service infrastructure is not processing traffic efficiently. We're making configuration changes to remediate impact.
Scope of impact: Impact is specific to some users who are served through the affected infrastructure.
Next update by: Monday, March 16, 2026, at 4:30 PM UTC
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