Some users may be unable to access Microsoft Word, PowerPoint, or Excel for the web

Title: Some users may be unable to access Microsoft Word, PowerPoint, or Excel for the web User impact: Users may have been unable to access Microsoft Word, PowerPoint, or Excel for the web. Final status: We've identified a recent change intended to update the process by which access requests are routed introduced a header issue which resulted in the impact. We've reversed this change and, after monitoring service health telemetry, confirmed the failures associated with the issue have ceased and the impact is remediated. Scope of impact: Some users who attempted to access Microsoft Word, PowerPoint, or Excel for the web may have been impacted. Start time: Monday, November 2, 2026, at 11:26 PM UTC End time: Tuesday, November 3, 2026, at 9:31 PM UTC Root cause: A recent change intended to update the process by which access requests are routed introduced a header issue which resulted in the impact. Next steps: - We're reviewing our update standards to ensure similar issues are caught and addressed ahead of deployment to prevent similar issues from occurring. This is the final update for the event.

Title: Some users may be unable to access Microsoft Word, PowerPoint, or Excel for the web User impact: Users may be unable to access Microsoft Word, PowerPoint, or Excel for the web. Current status: We're reviewing service health telemetry, as well as recent changes, to identify the source of the impact and develop a mitigation strategy. Scope of impact: Some users attempting to access Microsoft Word, PowerPoint, or Excel for the web may be impacted. This section may be updated as our investigation continues. Next update by: Tuesday, November 3, 2026, at 11:30 PM UTC

Title: Some users may be unable to access Microsoft Word, PowerPoint, or Excel for the web User impact: Users may be unable to access Microsoft Word, PowerPoint, or Excel for the web. Current status: We're investigating a potential issue with Microsoft 365 for the web and checking for impact to your organization. We'll provide an update within 30 minutes.