Users may encounter failures or may be unable to use PowerPoint agents in Microsoft 365 Copilot

Timeline (UK time)

1. 29 Sep 2026, 21:50 BST ✓ Operational

   Title: Users may encounter failures or may be unable to use PowerPoint agents in Microsoft 365 Copilot User impact: Users may have encountered failures or may have been unable to use PowerPoint agents in Copilot. Final status: We've identified that an increase in request traffic to the portion of infrastructure responsible for facilitating PowerPoint agents prevented the service from being able to handle the traffic effectively and caused impact. We've rebalanced the request traffic and confirmed through service health telemetry that the impact is remediated as a result. Scope of impact: Any user that attempted to use PowerPoint agents in Copilot may have been affected. Start time: Tuesday, September 29, 2026, at 6:30 PM UTC End time: Tuesday, September 29, 2026, at 8:15 PM UTC Root cause: An increase in request traffic to the portion of infrastructure responsible for facilitating PowerPoint agents prevented the service from being able to handle the traffic effectively and caused impact Next steps: - We're reviewing the source of the request traffic to identify the reason it increased so that we can determine how to prevent similar impact to PowerPoint agents from occurring in the future. This is the final update for the event.

2. 29 Sep 2026, 20:31 BST ✓ Operational

   Title: Users may encounter failures or may be unable to use PowerPoint agents in Microsoft 365 Copilot User impact: Users may encounter failures or may be unable to use PowerPoint agents in Copilot. Current status: Our service health monitoring alerted us to failures occurring when users attempt to use PowerPoint agents in Copilot. We're reviewing the failures to identify their source, so that we can determine how to remediate the impact. Scope of impact: Any user attempting to use PowerPoint agents in Copilot may be affected. Next update by: Tuesday, September 29, 2026, at 9:00 PM UTC

3. 29 Sep 2026, 20:20 BST ✓ Operational

   Title: We're looking into a potential problem impacting Microsoft 365 Copilot User impact: We're checking for potential impact to your users. Current status: We're investigating a potential issue impacting Copilot and checking for impact to your organization. We'll provide an update within 30 minutes.