Microsoft 365 Alert – Service Degradation – Microsoft 365 Suite – Unable to access multiple Microsoft 365 services – RESOLVED

30/07/2024 14:15:00 PM

NHSmail Reference: INC44711611

Microsoft Reference: MO842351

Issue Status: RESOLVED

Issue Description: Users may be unable to access multiple Microsoft 365 services.

More info: Users who can access the impacted Microsoft 365 services may experience latency or degraded feature performance.

These lists will change as we confirm that different services are or aren’t affected.
– Impacted services include, but are not limited to:
– Microsoft 365 admin center
– Intune
– Entra
– Power Platform

– Initial indications are that the following services are not impacted:
– SharePoint Online
– OneDrive for Business
– Microsoft Teams
– Exchange Online

Final Update: 31/07/2024 08:50:00 AM Microsoft have confirmed through extending monitoring and internal validations that the issue is now resolved.

Scope of impact: Impact is specific to some users who are served through the affected infrastructure, attempting to utilize some Microsoft 365 services or features.

Root cause: An unexpected usage spike resulted in Azure Front Door (AFD) networking components performing below acceptable thresholds, leading to intermittent errors, timeout, and latency. Microsoft will provide more information within the Post Incident Report (PIR).

Next steps: Microsoft are reviewing their mitigation procedures for usage spikes to better respond to future incidents and reduce impact time.

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