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Status
Service Degradation
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Impacted services
Microsoft 365 suite
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Details
Title: Users are unable to access Microsoft 365 Copilot Chat or portal.office.com
User impact: Users are unable to access Microsoft 365 Copilot Chat or portal.office.com.
More info: Admins may be able to access the Microsoft 365 admin center via admin.cloud.microsoft as a temporary solution. Additionally, Copilot in Microsoft Teams is not expected to be impacted and can be leveraged in the interim while we mitigate the issue.
Current status: This is a continuation of a communication posted under CW1387674. We’ve identified an issue with a recent deployment for Microsoft Copilot. We’re reverting to a previous build to remediate impact as soon as possible. We expect this to be completed in the next 30 minutes.
Scope of impact: Our investigation indicates that any user or admin may be affected by this event. This section is subject to change as the investigation continues.
Start time: Thursday, June 11, 2026, at 8:00 PM UTC
Estimated time to resolve: We expect the reversion to be complete in the next 30 minutes.
Root cause: The root cause is still being investigated. We will provide more information in our next update.
Next update by: Thursday, June 11, 2026, at 10:00 PM UTC
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