Outage in Microsoft 365
Users cannot access Microsoft 365 Copilot Chat
Resolved Minor
June 11, 2026 - Started about 6 hours ago
- Lasted about 1 hour
Incident Report
Summary AI Generated
Microsoft 365 Copilot Chat became completely inaccessible to all users due to a faulty deployment, with users reporting inability to access the portal and receiving error messages. Microsoft identified the problematic deployment and resolved the issue by reverting to a previous build. The incident lasted 1.1 hours from start to resolution.
Title: We're looking into a potential problem impacting Microsoft 365 Copilot chat
User impact: We're checking for potential impact to your users.
Current status: We're investigating a potential issue impacting Microsoft 365 Copilot Chat and checking for impact to your organization. We'll provide an update within 60 minutes.
User impact: We're checking for potential impact to your users.
Current status: We're investigating a potential issue impacting Microsoft 365 Copilot Chat and checking for impact to your organization. We'll provide an update within 60 minutes.
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Latest Updates ( sorted recent to last )
about 6 hours ago - at 06/11/2026 09:17PM
Title: Users cannot access Microsoft 365 Copilot Chat
User impact: Users cannot access Microsoft 365 Copilot Chat.
Current status: 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: All Microsoft 365 Copilot users are not able to access Copilot. This section may be updated as our investigation progresses.
Start time: Thursday, June 11, 2026, at 8:00 PM UTC
Next update by: Thursday, June 11, 2026, at 10:30 PM UTC
about 6 hours ago - at 06/11/2026 08:42PM
Title: We're looking into a potential problem impacting Microsoft 365 Copilot chat
User impact: We're checking for potential impact to your users.
Current status: We're investigating a potential issue impacting Microsoft 365 Copilot Chat and checking for impact to your organization. We'll provide an update within 60 minutes.
source IsDown
Users report possible problems with Microsoft 365
Reports started 3 minutes before official outage was reported
Latest Microsoft 365 outages
Users are unable to access Microsoft 365 Copilot Chat or portal.office.com - about 6 hours ago
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