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Some users may be unable to see GPT within the model selection options in Microsoft 365 Copilot chat

Microsoft 365 Copilot Chat CW1514746

Users may be unable to see GPT within the model selection options in Copilot chat.

Status
Service degradation
Feature
General
Region
Not specified (all regions)
Started
Oct 19, 2026, 08:59 CEST
Duration
5 h 47 min
Last update
Oct 19, 2026, 12:53 CEST
Next update
Oct 19, 2026, 20:00 CEST

Current status

We’ve identified that a recent Copilot service update modified how model selection options respond to an organization’s settings for OpenAI models. We’re working to confirm whether this is the expected experience.

More info

As a workaround, affected users can continue using Auto in Copilot chat, to automatically choose an available model.

Scope of impact

Some users attempting to access GPT within the model selection options in Copilot chat may be impacted. This information may be updated as our investigation continues.

Timeline

Every update Microsoft posted for this issue, newest first.

  1. Oct 19, 2026, 12:52 CEST

    We’ve identified that a recent Copilot service update modified how model selection options respond to an organization’s settings for OpenAI models. We’re working to confirm whether this is the expected experience.

  2. Oct 19, 2026, 10:52 CEST

    We’ve identified that the issue may be related to service information used to determine which models are displayed in Copilot chat. We’re reviewing recent changes and service logs to isolate the underlying cause and determine the appropriate mitigation.

  3. Oct 19, 2026, 09:00 CEST

    We’re reviewing service monitoring telemetry and logs collected from affected users to isolate the root cause of the missing model selection options and determine our next troubleshooting steps.

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Source: Microsoft Graph, Service Communications API. This is the view of a Swiss Microsoft 365 tenant: services not licensed there are missing, and individual issues may affect your tenant differently. Microsoft names the region only in the issue text. The Switzerland view shows issues for Switzerland, for Europe in general and those without a region, but not issues that only name other countries such as Germany or the UK. This page is not provided by Microsoft.