Live status of all services Advisory · resolved

Admins may be unable to review Service health or Message center postings in the Microsoft 365 admin center

Microsoft 365 suite MO1506255

Admins may have been unable to review Service health or Message center postings in the Microsoft 365 admin center.

Status
Service restored
Feature
Access
Region
Not specified (all regions)
Started
Oct 12, 2026, 23:54 CEST
Resolved
Oct 13, 2026, 21:35 CEST
Duration
21 h 41 min

More info

Admins' "What's new" tab in the Microsoft Teams admin center may have been blank and displayed an error stating, "We can't load data. Try again."

Scope of impact

This issue affected some admins attempting to review Service health or Message center postings in the Microsoft 365 admin center or see new activities in the “What’s new” tab in the Microsoft Teams admin center.

Root cause

A recent service update introduced a misconfiguration which caused the Service Health and Communications API to return authentication errors, resulting in impact.

Next steps:
- We're analyzing the offending service update to determine why the potential for impact wasn't caught during our internal update testing and validation phases. This further analysis will help us to improve our update implementation processes moving forward to ensure similar impact scenarios don't occur in the future.

This is the final update for the event.

Final status

We've completed our monitoring period and validated that the rollback of the service update containing the misconfiguration successfully remediated impact.

Timeline

Every update Microsoft posted for this issue, newest first.

  1. Oct 13, 2026, 22:58 CEST

    We've completed our monitoring period and validated that the rollback of the service update containing the misconfiguration successfully remediated impact.

  2. Oct 13, 2026, 21:45 CEST

    We're continuing to monitor recovery, and we anticipate some users will start to see remediation at this time. To ensure impact is fully remediated, we've extended our monitoring period, and we anticipate impact to be resolved by our next scheduled update.

  3. Oct 13, 2026, 20:53 CEST

    We've received reports from a subset of affected users who have reported that they are unable to review Service health or Message center postings in the Microsoft 365 admin center or see new activities in the “What’s new” tab in the Microsoft Teams admin center. We've isolated that a recent service update introduced a misconfiguration which causes the Service Health and Communications API to return authentication errors, resulting in impact. We're rolling back the offending update and monitoring for remediation. We anticipate impact to be resolved by our next scheduled update.

  4. Oct 13, 2026, 20:27 CEST

    We're investigating a potential issue with the Microsoft 365 suite and checking for impact to your organization. We'll provide an update within 30 minutes.

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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.