Users' recordings of presentations using PowerPoint Live in Microsoft Teams may be missing some slides

Title: Users' recordings of presentations using PowerPoint Live in Microsoft Teams may be missing some slides User impact: Users' recordings of presentations using PowerPoint Live in Microsoft Teams may have been missing some slides. Final status: We've confirmed after an extended period of monitoring that our optimizations and traffic management have fully remediated the impact. Scope of impact: Users who recorded PowerPoint Live in Microsoft Teams presentations may have been impacted. Start time: Monday, September 28, 2026, at 1:00 PM UTC End time: Tuesday, October 6, 2026, at 12:00 AM UTC Root cause: A subset of networking service infrastructure that helps facilitate access to PowerPoint Live content fell below our manageable service performance thresholds, which resulted in impact. Next steps: - We're continuing our analysis of the impacted infrastructure so we can understand why it fell below expected performance thresholds and take any corrective actions necessary to prevent this issue from reoccurring. This is the final update for the event.

Title: Users' recordings of presentations using PowerPoint Live in Microsoft Teams may be missing some slides User impact: Users' recordings of presentations using PowerPoint Live in Microsoft Teams may be missing some slides. Current status: We're continuing to implement additional optimizations and traffic management controls to mitigate impact. We expect this to be complete by our next scheduled update. Scope of impact: Users recording PowerPoint Live in Microsoft Teams presentations may be impacted. This information may be updated as our investigation continues. Start time: Monday, September 28, 2026, at 1:00 PM UTC Root cause: A subset of networking service infrastructure that helps facilitate access to PowerPoint Live content has fallen below our manageable service performance thresholds, resulting in impact. Next update by: Tuesday, October 6, 2026, at 4:30 PM UTC

Title: Users' recordings of presentations using PowerPoint Live in Microsoft Teams may be missing some slides User impact: Users' recordings of presentations using PowerPoint Live in Microsoft Teams may be missing some slides. Current status: We're implementing additional optimizations and traffic management controls to mitigate impact. We're continuing to assess progress and expect to provide an estimated completion timeline in our next update. Scope of impact: Users recording PowerPoint Live in Microsoft Teams presentations may be impacted. This information may be updated as our investigation continues. Start time: Monday, September 28, 2026, at 1:00 PM UTC Root cause: A subset of networking service infrastructure that helps facilitate access to PowerPoint Live content has fallen below our manageable service performance thresholds, resulting in impact. Next update by: Tuesday, October 6, 2026, at 10:00 AM UTC

Title: Users' recordings of presentations using PowerPoint Live in Microsoft Teams may be missing some slides User impact: Users' recordings of presentations using PowerPoint Live in Microsoft Teams may be missing some slides. Current status: We've monitored service health telemetry and determined that additional mitigation actions are required to fully remediate the issue. We're actively evaluating available mitigation options and working to expedite resolution. Scope of impact: Users recording PowerPoint Live in Microsoft Teams presentations may be impacted. This information may be updated as our investigation continues. Start time: Monday, September 28, 2026, at 1:00 PM UTC Root cause: A subset of networking service infrastructure that helps facilitate access to PowerPoint Live content has fallen below our manageable service performance thresholds, resulting in impact. Next update by: Monday, October 5, 2026, at 8:00 AM UTC

Title: Users' recordings of presentations using PowerPoint Live in Microsoft Teams may be missing some slides User impact: Users' recordings of presentations using PowerPoint Live in Microsoft Teams may be missing some slides. Current status: Following out latest traffic optimizations and subsequent service restarts, we're monitoring a vast reduction in failures on the affected subset of networking service infrastructure. While impact is expected to be resolved for a majority of users, we're conducting a period of service health monitoring to verify if any additional mitigation efforts will be required. Scope of impact: Users recording PowerPoint Live in Microsoft Teams presentations may be impacted. This information may be updated as our investigation continues. Start time: Monday, September 28, 2026, at 1:00 PM UTC Root cause: A subset of networking service infrastructure that helps facilitate access to PowerPoint Live content has fallen below our manageable service performance thresholds, resulting in impact. Next update by: Friday, October 2, 2026, at 10:00 AM UTC

Title: Users' recordings of presentations using PowerPoint Live in Microsoft Teams may be missing some slides User impact: Users' recordings of presentations using PowerPoint Live in Microsoft Teams may be missing some slides. Current status: We're restarting system services and monitoring peak traffic patterns after conducting our traffic distribution changes, to determine if additional mitigation actions will be needed. Scope of impact: Users recording PowerPoint Live in Microsoft Teams presentations may be impacted. This information may be updated as our investigation continues. Start time: Monday, September 28, 2026, at 1:00 PM UTC Root cause: A subset of networking service infrastructure that helps facilitate access to PowerPoint Live content has fallen below our manageable service performance thresholds, resulting in impact. Next update by: Thursday, October 1, 2026, at 6:00 PM UTC

Title: Users' recordings of presentations using PowerPoint Live in Microsoft Teams may be missing some slides User impact: Users' recordings of presentations using PowerPoint Live in Microsoft Teams may be missing some slides. Current status: We're monitoring service behavior during peak usage periods to measure the impact of the traffic-distribution changes that were recently applied. This analysis is helping us determine why download activity and retries increased and whether additional adjustments are needed to reduce latency and timeout-related impact. Scope of impact: Users recording PowerPoint Live in Microsoft Teams presentations may be impacted. This information may be updated as our investigation continues. Next update by: Thursday, October 1, 2026, at 4:00 PM UTC

Title: Users' recordings of presentations using PowerPoint Live in Microsoft Teams may be missing some slides User impact: Users' recordings of presentations using PowerPoint Live in Microsoft Teams may be missing some slides. Current status: We're continuing to analyze the traffic patterns associated with downloading PowerPoint Live content to better understand why some requests are exceeding platform protection thresholds during peak usage periods. We're refining our mitigation actions and reviewing the conditions that are causing cross-region requests to experience increased latency and intermittent timeouts so that we can further reduce impact. Scope of impact: Users recording PowerPoint Live in Microsoft Teams presentations may be impacted. This information may be updated as our investigation continues. Next update by: Thursday, October 1, 2026, at 2:00 PM UTC

Title: Users' recordings of presentations using PowerPoint Live in Microsoft Teams may be missing some slides User impact: Users' recordings of presentations using PowerPoint Live in Microsoft Teams may be missing some slides. Current status: We've confirmed that an increased amount of user requests exceeded platform protection thresholds on a component used to download presentation content, resulting in restrictions, packet drops and increased latency that caused some download attempts to timeout before completion. We're applying traffic and performance optimizations to mitigate impact while continuing to investigate the source of the traffic increase. Scope of impact: Users recording PowerPoint Live in Microsoft Teams presentations may be impacted. This information may be updated as our investigation continues. Next update by: Thursday, October 1, 2026, at 12:00 PM UTC

Title: Users' recordings of presentations using PowerPoint Live in Microsoft Teams may be missing some slides User impact: Users' recordings of presentations using PowerPoint Live in Microsoft Teams may be missing some slides. Current status: We've determined that packet retransmissions and latency within the data-transfer path used to download presentation content may be causing some download attempts to time out before completion. We're performing targeted diagnostics to further isolate the affected network path and identify the most effective remediation strategy. Scope of impact: Users recording PowerPoint Live in Microsoft Teams presentations may be impacted. This information may be updated as our investigation continues. Next update by: Thursday, October 1, 2026, at 10:00 AM UTC

Title: Users' recordings of presentations using PowerPoint Live in Microsoft Teams may be missing some slides User impact: Users' recordings of presentations using PowerPoint Live in Microsoft Teams may be missing some slides. Current status: Our investigation into the additional logs to refine our understanding of why the issue may be occurring is progressing as expected. Scope of impact: Users recording PowerPoint Live in Microsoft Teams presentations may be impacted. This information may be updated as our investigation continues. Next update by: Thursday, October 1, 2026, at 8:00 AM UTC

Title: Users' recordings of presentations using PowerPoint Live in Microsoft Teams may be missing some slides User impact: Users' recordings of presentations using PowerPoint Live in Microsoft Teams may be missing some slides. Current status: Further analysis shows that the aforementioned recent request routing change may not be the only factor contributing to impact. We're investigating additional logs to refine our understanding of why the issue may be occurring so that we can identify the best path towards remediation. Scope of impact: Users recording PowerPoint Live in Microsoft Teams presentations may be impacted. This information may be updated as our investigation continues. Next update by: Thursday, October 1, 2026, at 6:00 AM UTC

Title: Users' recordings of presentations using PowerPoint Live in Microsoft Teams may be missing some slides User impact: Users' recordings of presentations using PowerPoint Live in Microsoft Teams may be missing some slides. Current status: Based on our review of the telemetry data, failure logs, and correlation IDs, we suspect that there may be a latency issue potentially related to a recent request routing change. We're assessing potential remediation options to determine the best path towards resolving this issue. Scope of impact: Users recording PowerPoint Live in Microsoft Teams presentations may be impacted. This information may be updated as our investigation continues. Next update by: Thursday, October 1, 2026, at 4:00 AM UTC

Title: Users' recordings of presentations using PowerPoint Live in Microsoft Teams may be missing some slides User impact: Users' recordings of presentations using PowerPoint Live in Microsoft Teams may be missing some slides. Current status: Our review of the telemetry data, failure logs, and correlation IDs to pinpoint the root cause and a remediation strategy is progressing as expected. Scope of impact: Users recording PowerPoint Live in Microsoft Teams presentations may be impacted. This information may be updated as our investigation continues. Next update by: Thursday, October 1, 2026, at 2:00 AM UTC

Title: Users' recordings of presentations using PowerPoint Live in Microsoft Teams may be missing some slides User impact: Users' recordings of presentations using PowerPoint Live in Microsoft Teams may be missing some slides. Current status: We're continuing to review monitoring telemetry data along with failure logs and correlation IDs to determine the root cause and a strategy that remediates impact. Scope of impact: Users recording PowerPoint Live in Microsoft Teams presentations may be impacted. This information may be updated as our investigation continues. Next update by: Thursday, October 1, 2026, at 12:00 AM UTC

Title: Users' recordings of presentations using PowerPoint Live in Microsoft Teams may be missing some slides User impact: Users' recordings of presentations using PowerPoint Live in Microsoft Teams may be missing some slides. Current status: We're reviewing monitoring telemetry data to determine why users' recordings of presentations using PowerPoint Live in Microsoft Teams may be missing some slides. Scope of impact: Users recording PowerPoint Live in Microsoft Teams presentations may be impacted. This information may be updated as our investigation continues. Next update by: Wednesday, September 30, 2026, at 10:00 PM UTC

Title: Users' recordings of presentations using PowerPoint Live in Microsoft Teams may be missing some slides User impact: Users' recordings of presentations using PowerPoint Live in Microsoft Teams may be missing some slides. Current status: We're investigating a potential issue with Microsoft Teams and checking for impact to your organization. We'll provide an update within 30 minutes.