Microsoft 365 Alert – Service Degradation – Power BI – Some users may experience intermittent failures or delays when accessing Microsoft Power BI or Microsoft Fabric – RESOLVED

28/08/2026 08:59:00 AM

NHS.net Connect Reference: INC46921552

Microsoft Reference: PB1462800

Issue Status: RESOLVED

Issue Description: Users may have experienced intermittent failures or delays when accessing Microsoft Power BI or Microsoft Fabric.

Final Update: 28/08/2026 09:00:00 AM – Microsoft has completed their monitoring period of service availability and confirmed that their performance optimisations successfully remediated impact.

Scope of impact: This incident impacted some users, who may have experienced intermittent failures or delays when accessing Microsoft Power BI or Microsoft Fabric.

Root cause: An unexpected influx in user traffic caused Microsoft’s service infrastructure to begin operating in an unhealthy state, delaying the processing of user requests.

Next steps: Microsoft is analyzing the affected service infrastructure to validate what additional performance optimizations they can implement to bolster the resiliency of their service and to prevent similar impact scenarios from occurring in the future.