Outage in Microsoft 365
Some users may be unable to see model selection options in Microsoft 365 Copilot chat
Resolved Minor
October 14, 2026 - Started about 9 hours ago
- Lasted about 3 hours
Incident Report
Summary AI Generated
Some users were unable to see model selection options (GPT, Claude, and others) in Microsoft 365 Copilot chat for approximately 3.4 hours on October 14, 2026. A component responsible for generating the model selection options was malfunctioning, and users also reported errors referencing unusually high Planner traffic when attempting to use the feature. Microsoft deployed a fix to the affected infrastructure, confirmed restoration of model selection options internally, and followed up directly with affected customers to verify resolution.
Title: Some users are unable to see model selection options in Microsoft 365 Copilot chat
User impact: Users are unable to see model selection options in Copilot chat.
More info: Affected users may not see GPT, Claude, or other available models within the model selection options in Copilot chat.
Current status: We've received reports indicating an issue with model selection options in Copilot Chat. We're reviewing service monitoring telemetry to isolate the root cause and determine our next troubleshooting steps.
Scope of impact: Your organization is affected by this event, and some users attempting to access GPT, Claude, or other model selection options in Copilot chat are impacted. This information may be updated as our investigation continues.
Next update by: Wednesday, October 14, 2026, at 9:00 AM UTC
User impact: Users are unable to see model selection options in Copilot chat.
More info: Affected users may not see GPT, Claude, or other available models within the model selection options in Copilot chat.
Current status: We've received reports indicating an issue with model selection options in Copilot Chat. We're reviewing service monitoring telemetry to isolate the root cause and determine our next troubleshooting steps.
Scope of impact: Your organization is affected by this event, and some users attempting to access GPT, Claude, or other model selection options in Copilot chat are impacted. This information may be updated as our investigation continues.
Next update by: Wednesday, October 14, 2026, at 9:00 AM UTC
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Latest Updates ( sorted recent to last )
about 6 hours ago - at 10/14/2026 09:56AM
We've completed deploying the fix to the affected infrastructure, and we've verified in our internal environment that the model selection options have been restored within Copilot chat. We're now contacting affected customers directly to ensure the fix has produced the expected resolution.
This quick update is designed to give the latest information on this issue.
about 6 hours ago - at 10/14/2026 09:20AM
Title: Some users may be unable to see model selection options in Microsoft 365 Copilot chat
User impact: Users may be unable to see model selection options in Microsoft 365 Copilot chat.
More info: Affected users may not see GPT, Claude, or other available models within the model selection options in Copilot chat.
Current status: We've identified a component responsible for producing the model selection options in Copilot chat was not functioning correctly. To mitigate impact, we've developed a fix which is currently being deployed to the affected infrastructure and we're monitoring this process closely to ensure it delivers the expected resolution.
Scope of impact: Some users attempting to access GPT, Claude, or other model selection options in Copilot chat may be impacted. This information may be updated as our investigation continues.
Next update by: Wednesday, October 14, 2026, at 11:00 AM UTC
about 8 hours ago - at 10/14/2026 08:13AM
Title: Some users may be unable to see model selection options in Microsoft 365 Copilot chat
User impact: Users may be unable to see model selection options in Microsoft 365 Copilot chat.
More info: Affected users may not see GPT, Claude, or other available models within the model selection options in Copilot chat.
Current status: We’re reviewing service monitoring telemetry and support provided information to determine why model selection options aren’t appearing as expected, in order to develop a remediation plan.
Scope of impact: Some users attempting to access GPT, Claude, or other model selection options in Copilot chat may be impacted. This information may be updated as our investigation continues.
Next update by: Wednesday, October 14, 2026, at 10:00 AM UTC
about 9 hours ago - at 10/14/2026 07:07AM
Title: Some users are unable to see model selection options in Microsoft 365 Copilot chat
User impact: Users are unable to see model selection options in Copilot chat.
More info: Affected users may not see GPT, Claude, or other available models within the model selection options in Copilot chat.
Current status: We've received reports indicating an issue with model selection options in Copilot Chat. We're reviewing service monitoring telemetry to isolate the root cause and determine our next troubleshooting steps.
Scope of impact: Your organization is affected by this event, and some users attempting to access GPT, Claude, or other model selection options in Copilot chat are impacted. This information may be updated as our investigation continues.
Next update by: Wednesday, October 14, 2026, at 9:00 AM UTC
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