Microsoft 365 Alert – Service Degradation – Microsoft 365 suite – Users may be unable to access the Microsoft 365 admin center and see delays when accessing other Microsoft 365 services – RESOLVED

Announcements Arpan Das

29/10/2025 16:50:00 AM

NHSmail Reference: INC46669382

Microsoft Reference: MO1181369

Issue Status: RESOLVED

Issue Description: Users may be unable to access the Microsoft 365 admin center and see delays when accessing other Microsoft 365 services.

Final Update: 30/10/2025 08:20:00 AM – After extended monitoring, Microsoft have confirmed that impact stemming from the Azure configuration change has been resolved.

Scope of impact: Any users attempting to access Microsoft 365 services may be impacted.

Root cause: A problematic configuration change was applied to a portion of Azure infrastructure

Next steps: Microsoft are continuing to investigate what within the Azure configuration change initially led to impact so we can prevent similar configuration changes from resulting in future issues.