Microsoft 365 Alert – Service Degradation – OneDrive for Business – Some users may experience slow loading speeds or are unable to access OneDrive for Business content – RESOLVED

24/04/2024 16:13:00 PM

NHSMail Reference: INC42653381

Microsoft Reference: OD784652

Issue Status: RESOLVED

Issue Description: Users may experience slow loading speeds or are unable to access OneDrive for Business content.

Final Update: 26/04/2024 09:25:00 AM – Microsoft completed the extended monitoring period and confirmed the restoration of the previous version of the network infrastructure configuration did resolve the issue. Their monitoring telemetry continues to indicate that service availability is healthy, and customers have confirmed mitigation.

Scope of impact: Impact is specific to some users who are served through the affected infrastructure.

Root cause: A recent feature update to internal network infrastructure configurations caused increased network latency, which resulted in slow loading speeds or access issues for OneDrive for Business content.

Next steps: Microsoft are reviewing their safe deployment procedures to identify any areas of improvement to better prevent issues like this from occurring in the future. For a more comprehensive list of the next steps and actions, please refer to the Post Incident Report document.