Users may have been unable to view full telemetry data from the Microsoft Defender for Endpoint portal

Title: Users may have been unable to view full telemetry data from the Microsoft Defender for Endpoint portal

User impact: Users may have been unable to view full telemetry data from the Microsoft Defender for Endpoint portal.

Final status: We’ve identified that network authentication component misconfiguration inadvertently resulted in a section of infrastructure, responsible for facilitating telemetry data in the Microsoft Defender for Endpoint portal, to not function as expected. We’ve repaired the misconfiguration and confirmed impact is no longer occurring after a period of monitoring.

Scope of impact: Impact was specific to users, who were served through the affected infrastructure, attempting to view telemetry data from the Microsoft Defender for Endpoint portal.

Start time: Wednesday, September 27, 2023, at 5:10 AM UTC

End time: Wednesday, September 27, 2023, at 10:00 AM UTC

Root cause: A network authentication component misconfiguration inadvertently resulted in a section of infrastructure, responsible for facilitating telemetry data in the Microsoft Defender for Endpoint portal, to not function as expected.

Next steps:
– We’re reviewing our network authentication component configuration procedures to help prevent similar impact from happening again.

This is the final update for the event.