Live status of all services Incident · resolved

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

Microsoft 365 for the web OO1537414

Users may have been unable to access Microsoft Word, PowerPoint, or Excel for the web.

Status
Service restored
Feature
Word Online
Region
Not specified (all regions)
Started
Nov 3, 2026, 22:24 CET
Resolved
Nov 3, 2026, 23:35 CET
Duration
1 h 10 min

Scope of impact

Some users who attempted to access Microsoft Word, PowerPoint, or Excel for the web may have been impacted.

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.

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.

Timeline

Every update Microsoft posted for this issue, newest first.

  1. Nov 3, 2026, 23:52 CET

    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.

  2. Nov 3, 2026, 22:59 CET

    We're reviewing service health telemetry, as well as recent changes, to identify the source of the impact and develop a mitigation strategy.

  3. Nov 3, 2026, 22:34 CET

    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.

When Microsoft 365 goes down

The live overview shows the current state of every Microsoft 365 service, refreshed every minute from Microsoft Graph.

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To see whether your own tenant is affected, check Service health in the Microsoft 365 admin center. Only a backup outside Microsoft protects against data loss, and only a tested break-glass account against locked-out admins. We set up both in fixed-scope sprints.

Source: Microsoft Graph, Service Communications API. This is the view of a Swiss Microsoft 365 tenant: services not licensed there are missing, and individual issues may affect your tenant differently. Microsoft names the region only in the issue text. The Switzerland view shows issues for Switzerland, for Europe in general and those without a region, but not issues that only name other countries such as Germany or the UK. This page is not provided by Microsoft.