MC1455016
Stay informedNew featureAdmin impact
New Defender for Identity health issue for missing Windows events from a domain controller
Microsoft 365 Message Center Archive by Merill Fernando · Microsoft may not have sent this notice to your tenant.Rollout
Rollout dates are often only in the text. When Microsoft moves them, the change shows under "What changed".
What the notice says
Microsoft’s text, with source markup removedWhat and Why: Microsoft Defender for Identity is introducing a new sensor health issue, No Windows events received from domain controller, to help administrators identify when Defender for Identity sensors are not receiving expected Windows events from a domain controller. This new health issue provides better visibility into potential event collection gaps that may affect Microsoft Defender for Identity detections, monitoring, and overall visibility for the affected domain controller. Rollout Schedule: Available now. Impact on Your Organization: Who is affected: Organizations using Microsoft Defender for Identity. Service: Microsoft Defender for Identity After this rollout: Administrators may see a new health issue, No Windows events received from domain controller, in the Sensors health issues tab and the global Health issues experience. The health issue will be displayed when Defender for Identity is not receiving expected Windows events from a domain controller. The notification helps administrators identify and investigate potential event collection gaps that could affect Defender for Identity visibility and detections for the affected domain controller. Action Required / Recommendations: No action is required before the rollout. If this health issue appears in your environment after rollout, review the affected domain controller and event collection configuration. If additional assistance is needed, contact Microsoft Support. You may want to inform your security administrators about this new health monitoring capability.
What changed
Between archive captures, newest firstThe archive supplies one version of this notice.
Linked documentation
Microsoft pages the notice links toThe notice links to no Microsoft Learn or Support page that this installation reads.
Related public evidence
- Official documentation · 18 Oct 2026Defender for Identity on AD FS, AD CS and Entra Connect servers
- Public source · 14 Aug 2026MC1455017: New Defender for Identity health alert for missing domain controller network traffic Microsoft 365 Message Center Archive by Merill Fernando
Not confirmed here
What this page cannot tell you- Whether your tenant is affected: this is Microsoft's notice, not a check of your settings.