Live status of all services Advisory

Users are unable to access Notes in Outlook on the web

Exchange Online EX1531593

Users are unable to access Notes in Outlook on the web.

Status
Service degradation
Feature
OWA - service unavailable
Region
Not specified (all regions)
Started
Oct 30, 2026, 10:25 CET
Duration
4 h 23 min
Last update
Oct 30, 2026, 12:18 CET
Next update
Oct 30, 2026, 15:00 CET

Current status

We’re reverting the affected service setting rather than deploying an updated version, and will monitor this action to confirm whether it restores users’ access to Notes. We’ll provide an update on our progress as this process continues.

More info

Affected users may find that the Notes interface remains in a loading state and doesn't display their existing notes. Other Outlook on the web functionality remains available.

Scope of impact

Your organization is affected by this event, and all users attempting to access Notes in Outlook on the web are impacted.

Timeline

Every update Microsoft posted for this issue, newest first.

  1. Oct 30, 2026, 12:16 CET

    We’re reverting the affected service setting rather than deploying an updated version, and will monitor this action to confirm whether it restores users’ access to Notes. We’ll provide an update on our progress as this process continues.

  2. Oct 30, 2026, 10:29 CET

    We’ve identified a recent service update is causing impact to Notes in Outlook on the web. We’re deploying an updated version to the affected environment and expect this to restore access to Notes. We’ll validate service functionality as the update progresses.

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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.