Daily Defender NewsWeek of 10 August 2026 recorded 6 updated Microsoft Defender documentation changes and 3 relevant Message Center announcements. The most active areas were Endpoint, Defender XDR, Office 365.
Defender XDR · Endpoint protectionUpdate Microsoft Defender for Endpoint Android to version 1.0.9107.0101 or later by mid-September 2026 to avoid disruption in mobile threat protection due to infrastructure changes. Administrators should verify and update devices and inform users managing their own updates. No other configuration changes are needed.
Endpoint · TroubleshootingUpdated Microsoft Defender documentation in defender-endpoint/mac-troubleshoot-netext-mde.md.
Office 365 · Email and collaborationUpdated Microsoft Defender documentation in defender-office-365/safe-links-about.md.
Defender XDR · Incidents and responseMicrosoft Defender for Identity now includes a health alert for missing domain controller network traffic, helping administrators detect traffic collection issues affecting visibility. The alert appears in sensor health tabs, requires no pre-rollout action, and guides troubleshooting if triggered after rollout. No impact on end users or compliance.
Defender XDR · Identity protectionMicrosoft Defender for Identity now includes a new sensor health issue, "No Windows events received from domain controller," to alert administrators of missing Windows events. This improves visibility into event collection gaps affecting detections. It is available now, requires no pre-rollout action, and helps identify domain controller issues.
Review the linked Microsoft Learn changes that apply to your managed platforms, policies, applications, and rollout plans. The archive preserves the source diff for verification.
This period briefing was assembled from the tracked Microsoft Learn and Message Center changes.
Update Microsoft Defender for Endpoint Android to version 1.0.9107.0101 or later by mid-September 2026 to avoid disruption in mobile threat protection due to infrastructure changes. Administrators should verify and update devices and inform users managing their own updates. No other configuration changes are needed.
Microsoft Defender for Identity now includes a new sensor health issue, "No Windows events received from domain controller," to alert administrators of missing Windows events. This improves visibility into event collection gaps affecting detections. It is available now, requires no pre-rollout action, and helps identify domain controller issues.
Microsoft Defender for Identity now includes a health alert for missing domain controller network traffic, helping administrators detect traffic collection issues affecting visibility. The alert appears in sensor health tabs, requires no pre-rollout action, and guides troubleshooting if triggered after rollout. No impact on end users or compliance.
Updated Microsoft Defender documentation in defender-endpoint/mac-troubleshoot-netext-mde.md.
Updated Microsoft Defender documentation in defender-endpoint/mac-support-perf.md.
Updated Microsoft Defender documentation in defender-endpoint/mac-support-perf-overview.md.
Updated Microsoft Defender documentation in defender-endpoint/mac-support-sys-ext.md.
Updated Microsoft Defender documentation in defender-endpoint/mac-exclusions.md.
Updated Microsoft Defender documentation in defender-office-365/safe-links-about.md.
