Microsoft 365 Alert – Service Degradation – SharePoint Online – Users may not have been able to load the search bar in SharePoint Online sites – RESOLVED

Announcements Arpan Das

01/05/2026 08:54:00 AM

NHSmail Reference: INC46804402

Microsoft Reference: TM1286033

Issue Status: RESOLVED

Issue Description: Users may not be able to load the search bar in SharePoint Online sites

Current Update: 01/05/2026 08:37:00 AM– Microsoft has confirmed that the recent change that they rolled back contained a regression that resulted in this impact. After completing this rollback, they were able to confirm that this action resolved the through service health telemetry and confirmation from a subset of affected users.

Scope of impact: This event impacted any user attempting to use the search bar in SharePoint Online.

Root cause: A recent service update contained a regression that resulted in this impact.

Next Steps: Microsoft are reviewing the responsible change to better understand what led to the error that resulted in impact and prevent similar future occurrences by improving their service update testing and validation phases.