Users may be unable to access Copilot Voice in Microsoft 365 Copilot Chat or conduct voice conversations

Title: Users may be unable to access Copilot Voice in Microsoft 365 Copilot Chat or conduct voice conversations User impact: Users may have been unable to access Copilot Voice in Copilot Chat or conduct voice conversations. Final status: We've confirmed that a routing conflict during a recent update caused the system to incorrectly match certain requests, causing impact. We've developed and deployed a fix to the offending change. After a period of monitoring the service health telemetry, we've confirmed that the errors associated with impact are resolved and the issue is remediated. Scope of impact: This issue may have prevented any user from accessing Copilot Voice in Copilot Chat or conducting voice conversations. This information may be updated as our investigation continues. Start time: Sunday, May 17, 2026, at 3:07 AM UTC End time: Monday, May 18, 2026, at 1:27 AM UTC Root cause: A routing conflict introduced during a recent update caused the system to incorrectly match certain requests that included an API version identifier, resulting in the impact. Next steps: We're reviewing why a routing conflict introduced during a recent update cause the system to incorrectly match requests, to assist us in preventing similar future impact. This is the final update for the event.

Title: Users may be unable to access Copilot Voice in Microsoft 365 Copilot Chat or conduct voice conversations User impact: Users may be unable to access Copilot Voice in Copilot Chat or conduct voice conversations. Current status: We've developed and deployed a fix we anticipate will alleviate impact. We're monitoring the service health telemetry to validate if impact has ceased as we anticipate. Scope of impact: This issue may prevent any user from accessing Copilot Voice in Copilot Chat or conducting voice conversations. This information may be updated as our investigation continues. Start time: Sunday, May 17, 2026, at 3:07 AM UTC Next update by: Monday, May 18, 2026, at 4:00 AM UTC

Title: Users may be unable to access Copilot Voice in Microsoft 365 Copilot Chat or conduct voice conversations User impact: Users may be unable to access Copilot Voice in Copilot Chat or conduct voice conversations. Current status: We're continuing the investigation on recent service updates to isolate the cause of impact. In parallel, we're developing a service fix we anticipate will alleviate impact. We'll provide a timeline of deployment when one becomes available. Scope of impact: This issue may prevent any user from accessing Copilot Voice in Copilot Chat or conducting voice conversations. This information may be updated as our investigation continues. Start time: Sunday, May 17, 2026, at 3:07 AM UTC Next update by: Monday, May 18, 2026, at 2:00 AM UTC

Title: Users may be unable to access Copilot Voice in Microsoft 365 Copilot Chat or conduct voice conversations User impact: Users may be unable to access Copilot Voice in Copilot Chat or conduct voice conversations. Current status: Our internal service monitoring has identified an issue that may be preventing users from accessing Copilot Voice in Copilot Chat or conducting voice conversations. We're analyzing recent service updates as we isolate the source for the issue and determine our next troubleshooting steps for remediating the impact. Scope of impact: This issue may prevent any user from accessing Copilot Voice in Copilot Chat or conducting voice conversations. Start time: Sunday, May 17, 2026, at 3:30 AM UTC Next update by: Monday, May 18, 2026, at 12:00 AM UTC