Users may have experienced failures loading applications protected by Conditional Access App Control (CAAC)

Title: Users may have experienced failures loading applications protected by Conditional Access App Control (CAAC)

User impact: Users may have experienced failures loading applications protected by CAAC in Microsoft Defender for Cloud Apps.

Final status: We’ve identified that a component of infrastructure, responsible for loading applications protected by CAAC, was performing below acceptable performance thresholds and resulted in impact. We’ve optimized performance parameters on the affected infrastructure and confirmed after monitoring the environment that impact is no longer occurring.

Scope of impact: Impact was specific to users who were served through the affected infrastructure in the United Kingdom.

Start time: Tuesday, September 12, 2023, at 8:57 AM UTC

End time: Tuesday, September 12, 2023, at 9:52 AM UTC

Root cause: A component of infrastructure, responsible for loading applications protected by CAAC, was performing below acceptable performance thresholds and resulted in impact.

Next steps:
– We’re analyzing performance data and trends on the affected infrastructure to help prevent this problem from happening again.

This is the final update for the event.