Microsoft 365 Alert – Service Degradation –Microsoft Defender XDR – Users may experience intermittent delays receiving new commands and configurations in Microsoft Defender for Endpoint – RESOLVED

Announcements Arpan Das

20/11/2025 09:20:00 AM

NHSmail Reference: INC46686639

Microsoft Reference: DZ1188185

Issue Status: RESOLVED

Issue Description: Users may experience intermittent delays receiving new commands and configurations in Microsoft Defender for Endpoint.

Final Update: 21/11/2025 08:37:00 AM – Microsoft have confirmed after a period of monitoring that the deployment of the fix has been completed and issue is no longer occurring.

Scope of impact: Scope of impact: Impact may occur for some users where intermittent delays receiving new commands and configurations may occur in Microsoft Defender for Endpoint.

Root cause: A configuration issue within an upstream dependent service is causing a portion of Microsoft Defender for Endpoint infrastructure that distributes commands and configurations to operate below acceptable thresholds, resulting in intermittent delays.

Next Steps: Microsoft are analyzing performance data and trends on the affected infrastructure to help prevent this problem from happening again.