Users may have been unable to send messages in Copilot chat.
- Status
- Wiederhergestellt
- Funktion
- General
- Region
- Nicht angegeben (alle Regionen)
- Beginn
- 19.10.2026, 11:27 Uhr
- Behoben
- 19.10.2026, 12:21 Uhr
- Dauer
- 53 Min.
Mehr Informationen
Impacted experiences included Copilot chat through the Copilot web app, the Copilot app on Windows, Microsoft Teams, Outlook, and Microsoft 365 desktop apps.
Betroffen
Some users attempting to send messages in Copilot chat through the Copilot web app, the Copilot app on Windows, Microsoft Teams, Outlook, and Microsoft 365 desktop apps may have been impacted.
Ursache
A recent Copilot service update inadvertently increased traffic beyond expected levels, resulting in impact.
Next steps:
- We're reviewing our update procedures to better identify similar issues during our development and testing cycles.
This is the final update for the event.
Abschluss
We’ve determined that a recent Copilot service update inadvertently increased traffic beyond expected levels, resulting in impact. We’ve confirmed that reverting the update successfully mitigated the impact and restored the service.
Verlauf
Alle Updates von Microsoft zu dieser Meldung, das neuste zuoberst.
- 19.10.2026, 12:23 Uhr
We’ve determined that a recent Copilot service update inadvertently increased traffic beyond expected levels, resulting in impact. We’ve confirmed that reverting the update successfully mitigated the impact and restored the service.
- 19.10.2026, 11:29 Uhr
We’ve identified that a section of the Copilot service infrastructure that facilitates access is performing below acceptable thresholds. We’ve identified a service change that may be contributing to the impact and have reverted the change in an attempt to mitigate the issue. In parallel, we’re reviewing service telemetry and error data to confirm the root cause.