Live status of all services Advisory · resolved

Users may be unable to access the group feed in Microsoft Viva Engage

Microsoft Viva MV1519166

Users may have been unable to access the group feed with Microsoft Viva Engage.

Status
Service restored
Feature
Post/Reply/Like
Region
Not specified (all regions)
Started
Oct 21, 2026, 16:01 CEST
Resolved
Oct 21, 2026, 18:47 CEST
Duration
2 h 46 min

Scope of impact

This issue prevented any user from accessing the group feed with Microsoft Viva Engage.

Root cause

A subset of service infrastructure that helps facilitate access to the Microsoft Viva Engage group feed dropped below our manageable service performance thresholds, resulting in impact.

Next steps:
- We're further analyzing the subset of affected infrastructure to better understand the source for the lower-than-expected service performance, and to prevent similar issues in the future.

This is the final update for the event.

Final status

Following our infrastructure optimizations, our internal telemetry verified that the impact had been remediated.

Timeline

Every update Microsoft posted for this issue, newest first.

  1. Oct 21, 2026, 18:50 CEST

    Following our infrastructure optimizations, our internal telemetry verified that the impact had been remediated.

  2. Oct 21, 2026, 17:54 CEST

    We've identified a subset of service infrastructure that has dropped below our manageable service performance thresholds, preventing users from accessing the Microsoft Viva group feed with Microsoft Viva Engage. We're conducting service optimizations to the affected subset of service infrastructure to remediate the impact.

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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.