Microsoft Copilot Outage History

User impact: We don't have details on impact yet. We're seeing an increase in user reported issues above our alerting threshold. Current status: We are reviewing service telemetry and available information to determine if there is an issue happening and we'll update this message shortly with our latest findings. This communication serves as a preliminary notification about a potential issue affecting your service.

User impact: Users may be unable to access the Microsoft Copilot desktop or web app. Current status: We’re reviewing our telemetry to determine the specific impact and isolate the root cause. Next update by: Monday, June 01, 2026, at 5:00 PM UTC

User impact: Users may be unable to access the Copilot desktop or web app. Current status: We're working on getting logs from impacted users to focus our investigative efforts to isolate the source of impact. Start time: Monday, June 01, 2026, at 1:55 PM UTC Next update by: Monday, June 01, 2026, at 5:00 PM UTC

User impact: Users may be unable to access the Copilot desktop or web app. Current status: We've received logs from impacted users and are reviewing them to identify the root cause. We're also continuing to monitor our telemetry to determine mitigating actions we can implement in the interim as our investigation progresses. Start time: Monday, June 01, 2026, at 1:55 PM UTC Next update by: Monday, June 01, 2026, at 6:00 PM UTC

User impact: Users may be unable to access the Copilot desktop or web app. Current status: We identified a routing issue which is sending Copilot traffic to a portion of infrastructure that is unhealthy, resulting in the access and timeout errors. We're rerouting requests to healthy infrastructure and our telemetry is starting to show service health recovery. Start time: Monday, June 01, 2026, at 1:55 PM UTC Next update by: Monday, June 01, 2026, at 6:00 PM UTC

User impact: Users may be unable to use Microsoft Copilot. Current status: We're reviewing service telemetry to isolate the source of the issue. Next update by: Friday, May 29, 2026, at 5:30 PM UTC

User impact: Users may be unable to use Microsoft Copilot. Current status: We've identified high utilization on the underlying infrastructure that the Copilot LLM APIs use and are applying mitigations. Additionally, at the Copilot service level, we're reviewing options to change routing paths, throttling rules and retry logic to allow the underlying infrastructure to recover. Next update by: Friday, May 29, 2026, at 6:30 PM UTC

User impact: Users may see failures when accessing Microsoft Copilot More info: Users may be presented with a 401-error response code. Current status: We're investigating a potential issue with Microsoft Copilot and checking for impact to users. We'll provide an update within 30 minutes.

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

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

User impact: Users may be unable to select "Allow editing" when using Copilot through Word or Excel. More info: Affected users may be unable to click on the drop-down menu to select "Allow editing" and may only be able to utilize "Chat mode" for Copilot queries through Word or Excel. Current status: We've received reports from a subset of users who have stated they are unable to select "Allow editing" when using Copilot through Word or Excel. We've isolated that a recent update intended to add additional agent functionality for Copilot premium users incorrectly marked "Allow editing" and other agent mode functionalities to be unavailable to non-premium users. We're deploying a code fix to address this and we anticipate the code fix to be fully deployed by our next scheduled update. Start time: Friday, May 01, 2026, at 4:17 PM UTC Next update by: Tuesday, May 05, 2026, at 6:00 PM UTC

User impact: Users may be unable to select "Allow editing" when using Copilot through Word or Excel. More info: Affected users may be unable to click on the drop-down menu to select "Allow editing" and may only be able to utilize "Chat mode" for Copilot queries through Word or Excel. Current status: Our fix deployment is currently at 90 percent saturation but is taking longer than expected to complete. We're working to expedite the remainder of our deployment, and we anticipate the code fix to be fully deployed by our next scheduled update. Start time: Friday, May 01, 2026, at 4:17 PM UTC Next update by: Wednesday, May 06, 2026, at 12:00 AM UTC

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