Microsoft 365 Alert – Service Degradation – Power BI – Users may have been unable to reliably load task flows in Microsoft Fabric – RESOLVED

Announcements Arpan Das

18/11/2025 08:01:00 AM

NHSmail Reference: INC46707793

Microsoft Reference: PB1198521

Issue Status: RESOLVED

Issue Description: Users may have been unable to reliably load task flows in Microsoft Fabric.

More info: Users who navigated rapidly within the OneLake Catalog details page or switched tabs too often may have experienced temporary unavailability of the task flow feature for one to two minutes.

Final Update: 18/12/2025 08:02:00 AM – Microsoft have identified that a recent update to the OneLake catalog experience inadvertently introduced a code regression that caused the system to temporarily block the task flow feature if users navigated too quickly or switched tabs too often. They have reverted the change and have confirmed, following a period of monitoring service telemetry, that the issue is resolved.

Scope of impact: Your organization was affected by this event, and users who accessed the OneLake Catalog details page and navigated too quickly or switched tabs too often may have been impacted.

Root cause: A recent update to the OneLake catalog experience inadvertently introduced a code regression that caused the system to temporarily block the task flow feature if users navigated too quickly or switched tabs too often.

Next Steps: Microsoft are reviewing their update procedures to better identify similar issues during their development and testing cycles.