Live status of all services Incident · resolved

Some users may be unable to access or protect content using Azure Rights Management (ARM) across Microsoft 365 services

Microsoft 365 apps OP1514821

Users may be unable to access or protect content using ARM across Microsoft 365 services.

Status
Service restored
Feature
Multiple Applications
Region
Not specified (all regions)
Started
Oct 19, 2026, 08:30 CEST
Resolved
Oct 19, 2026, 11:19 CEST
Duration
2 h 49 min

More info

Impact may have prevented users from encrypting or decrypting protected content, including files and email messages, across Microsoft 365 services that rely on ARM.

Scope of impact

Some users attempting to encrypt or decrypt content using Microsoft 365 services that rely on ARM may have been impacted.

Root cause

Our preliminary investigation indicates that unexpected service behavior resulted in some components becoming unhealthy and unable to reliably process requests. We’re continuing our investigation to determine the underlying cause.

Next steps:
- We’re continuing our investigation into the underlying cause of the identified service behavior to help prevent similar impact from recurring.
- We’re reviewing our monitoring and telemetry to improve detection and alerting for similar service behavior.

We’ll provide a preliminary Post-Incident Report within two business days and a final Post-Incident Report within five business days.

Final status

Our mitigation efforts to stabilize the affected service components and restore request processing have been successful, and we’ve observed sustained recovery across the affected services.

Timeline

Every update Microsoft posted for this issue, newest first.

  1. Oct 19, 2026, 12:27 CEST

    Our mitigation efforts to stabilize the affected service components and restore request processing have been successful, and we’ve observed sustained recovery across the affected services.

  2. Oct 19, 2026, 11:05 CEST

    We’ve identified that some service components responsible for processing Azure Rights Management requests are in an unhealthy state. We’re attempting to restart the affected components to mitigate impact. We’re seeing early signs of service recovery and are investigating the root cause while evaluating whether additional mitigation actions are required.

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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.