Week in brief

Migrating from non-Microsoft HIPS to attack surface reduction rules leads 320 Defender updates

Week of 4 May 2026 recorded 5 new, 309 updated, 6 removed Microsoft Defender documentation changes. The most active areas were Identity, Endpoint, Sentinel.

For Defender administrators

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.

Updates this week

22

UrlClickEvents

Updated

Updated Microsoft Defender documentation in defender-xdr/advanced-hunting-urlclickevents-table.md.

8 May 2026

Auditing

Updated

Updated Microsoft Defender documentation in defender-xdr/auditing.md.

7 May 2026

Whats New

Updated

Updated Microsoft Defender documentation in defender-xdr/whats-new.md.

7 May 2026

Whats New

Updated

Updated Microsoft Defender documentation in defender-xdr/whats-new.md.

7 May 2026

Investigate Users

Updated

Updated Microsoft Defender documentation in defender-xdr/investigate-users.md.

4 May 2026

Manage Rbac

Updated

Updated Microsoft Defender documentation in defender-xdr/manage-rbac.md.

4 May 2026

Investigate Users

Updated

Updated Microsoft Defender documentation in defender-xdr/investigate-users.md.

4 May 2026
8

Autoad Results

Updated

Updated Microsoft Defender documentation in defender-xdr/autoad-results.md.

6 May 2026

Whats New

Updated

Updated Microsoft Defender documentation in defender-xdr/whats-new.md.

6 May 2026

Whats New

Updated

Updated Microsoft Defender documentation in defender-xdr/whats-new.md.

6 May 2026

Compare Rbac Roles

Updated

Updated Microsoft Defender documentation in defender-xdr/compare-rbac-roles.md.

4 May 2026
5

Get Started Xdr

Updated

Updated Microsoft Defender documentation in defender-xdr/get-started-xdr.md.

7 May 2026

Dex Servers Overview

Updated

Updated Microsoft Defender documentation in defender-xdr/dex-servers-overview.md.

7 May 2026

Get Started Dex Servers

Updated

Updated Microsoft Defender documentation in defender-xdr/get-started-dex-servers.md.

7 May 2026

Get Started Dex Servers

Updated

Updated Microsoft Defender documentation in defender-xdr/get-started-dex-servers.md.

7 May 2026
5
2
2
2
1

Privacy Defender Agent 365

Updated

Updated Microsoft Defender documentation in defender-xdr/security-for-ai/privacy-defender-agent-365.md.

4 May 2026
58

Custom Data Collection

Updated

Updated Microsoft Defender documentation in defender-endpoint/custom-data-collection.md.

10 May 2026

Portal

Updated

Updated Microsoft Defender documentation in defender-endpoint/linux-support-offline-security-intelligence-update.md.

8 May 2026

Portal

Updated

Updated Microsoft Defender documentation in defender-endpoint/linux-support-offline-security-intelligence-update.md.

7 May 2026

Managed JSON

Updated

Updated Microsoft Defender documentation in defender-endpoint/linux-support-offline-security-intelligence-update.md.

7 May 2026

Managed JSON

Updated

Updated Microsoft Defender documentation in defender-endpoint/linux-support-offline-security-intelligence-update.md.

7 May 2026

Respond Machine Alerts

Updated

Updated Microsoft Defender documentation in defender-endpoint/respond-machine-alerts.md.

7 May 2026

Respond Machine Alerts

Updated

Updated Microsoft Defender documentation in defender-endpoint/respond-machine-alerts.md.

6 May 2026

Respond Machine Alerts

Updated

Updated Microsoft Defender documentation in defender-endpoint/respond-machine-alerts.md.

6 May 2026

Respond Machine Alerts

Updated

Updated Microsoft Defender documentation in defender-endpoint/respond-machine-alerts.md.

6 May 2026

Admin Submissions Mde

Updated

Updated Microsoft Defender documentation in defender-endpoint/admin-submissions-mde.md.

6 May 2026

Admin Submissions Mde

Updated

Updated Microsoft Defender documentation in defender-endpoint/admin-submissions-mde.md.

6 May 2026

Managing Exclusions

Updated

Updated Microsoft Defender documentation in defender-endpoint/managing-exclusions.md.

6 May 2026

Respond Machine Alerts

Updated

Updated Microsoft Defender documentation in defender-endpoint/respond-machine-alerts.md.

6 May 2026

Device Control Faq

Updated

Updated Microsoft Defender documentation in defender-endpoint/device-control-faq.md.

6 May 2026

Device Control Report

Updated

Updated Microsoft Defender documentation in defender-endpoint/device-control-report.md.

6 May 2026

Device Control Report

Updated

Updated Microsoft Defender documentation in defender-endpoint/device-control-report.md.

6 May 2026

Managing Exclusions

Updated

Updated Microsoft Defender documentation in defender-endpoint/managing-exclusions.md.

4 May 2026

Mde P1 Setup Configuration

Updated

Updated Microsoft Defender documentation in defender-endpoint/mde-p1-setup-configuration.md.

4 May 2026

Switch To Mde Phase 2

Updated

Updated Microsoft Defender documentation in defender-endpoint/switch-to-mde-phase-2.md.

4 May 2026
25

Enable your ASR rules deployment

Updated

Updated Microsoft Defender documentation in defender-endpoint/attack-surface-reduction-rules-deployment-implement.md.

6 May 2026

Test your ASR rules deployment

Updated

Updated Microsoft Defender documentation in defender-endpoint/attack-surface-reduction-rules-deployment-test.md.

5 May 2026

ASR rules reference

Updated

Updated Microsoft Defender documentation in defender-endpoint/attack-surface-reduction-rules-reference.md.

5 May 2026

ASR rules report

Updated

Updated Microsoft Defender documentation in defender-endpoint/attack-surface-reduction-rules-report.md.

5 May 2026

Monitor ASR rule activity

Updated

Updated Microsoft Defender documentation in defender-endpoint/attack-surface-reduction-rules-monitor.md.

5 May 2026

Enable your ASR rules deployment

Updated

Updated Microsoft Defender documentation in defender-endpoint/attack-surface-reduction-rules-deployment-implement.md.

5 May 2026

ASR rules deployment guide

Updated

Updated Microsoft Defender documentation in defender-endpoint/attack-surface-reduction-rules-deployment.md.

5 May 2026
2

Plan your ASR rules deployment

Updated

Updated Microsoft Defender documentation in defender-endpoint/attack-surface-reduction-rules-deployment-plan.md.

5 May 2026
1
4

Safe Links About

Updated

Updated Microsoft Defender documentation in defender-office-365/safe-links-about.md.

8 May 2026

Anti Phishing Policies About

Updated

Updated Microsoft Defender documentation in defender-office-365/anti-phishing-policies-about.md.

6 May 2026
78

Migrate To Sensor V3

Updated

Updated Microsoft Defender documentation in defender-for-identity/deploy/migrate-to-sensor-v3.md.

7 May 2026

Test Sensor

Updated

Updated Microsoft Defender documentation in defender-for-identity/deploy/test-sensor.md.

7 May 2026

Ops Guide Daily

Updated

Updated Microsoft Defender documentation in defender-for-identity/ops-guide/ops-guide-daily.md.

7 May 2026

Exclusions

Updated

Updated Microsoft Defender documentation in defender-for-identity/exclusions.md.

7 May 2026

Health Alerts

Updated

Updated Microsoft Defender documentation in defender-for-identity/health-alerts.md.

7 May 2026

Health Alerts

Updated

Updated Microsoft Defender documentation in defender-for-identity/health-alerts.md.

7 May 2026

Ops Guide

Updated

Updated Microsoft Defender documentation in defender-for-identity/ops-guide/ops-guide.md.

7 May 2026

Whats New

Updated

Updated Microsoft Defender documentation in defender-for-identity/whats-new.md.

7 May 2026

Health Alerts

Updated

Updated Microsoft Defender documentation in defender-for-identity/health-alerts.md.

7 May 2026

Health Alerts

Updated

Updated Microsoft Defender documentation in defender-for-identity/health-alerts.md.

6 May 2026

Remediation Actions

Updated

Updated Microsoft Defender documentation in defender-for-identity/remediation-actions.md.

6 May 2026

Exclusions

Updated

Updated Microsoft Defender documentation in defender-for-identity/exclusions.md.

6 May 2026

Exclusions

Updated

Updated Microsoft Defender documentation in defender-for-identity/exclusions.md.

6 May 2026

Exclusions

Updated

Updated Microsoft Defender documentation in defender-for-identity/exclusions.md.

6 May 2026

Exclusions

Updated

Updated Microsoft Defender documentation in defender-for-identity/exclusions.md.

6 May 2026

Exclusions

Updated

Updated Microsoft Defender documentation in defender-for-identity/exclusions.md.

6 May 2026

Migrate To Sensor V3

Updated

Updated Microsoft Defender documentation in defender-for-identity/deploy/migrate-to-sensor-v3.md.

5 May 2026

Whats New

Updated

Updated Microsoft Defender documentation in defender-for-identity/whats-new.md.

5 May 2026

Entity Tags

Updated

Updated Microsoft Defender documentation in defender-for-identity/entity-tags.md.

5 May 2026

Migrate To Sensor V3

Updated

Updated Microsoft Defender documentation in defender-for-identity/deploy/migrate-to-sensor-v3.md.

4 May 2026

Migrate To Sensor V3

Updated

Updated Microsoft Defender documentation in defender-for-identity/deploy/migrate-to-sensor-v3.md.

4 May 2026

Migrate To Sensor V3

Updated

Updated Microsoft Defender documentation in defender-for-identity/deploy/migrate-to-sensor-v3.md.

4 May 2026

Migrate From Ata Overview

Updated

Updated Microsoft Defender documentation in defender-for-identity/migrate-from-ata-overview.md.

4 May 2026

Migrate To Sensor V3

Updated

Updated Microsoft Defender documentation in defender-for-identity/deploy/migrate-to-sensor-v3.md.

4 May 2026

Migrate To Sensor V3

Updated

Updated Microsoft Defender documentation in defender-for-identity/deploy/migrate-to-sensor-v3.md.

4 May 2026

Sensor Settings

Updated

Updated Microsoft Defender documentation in defender-for-identity/sensor-settings.md.

4 May 2026

Configure Windows event auditing

Updated

Updated Microsoft Defender documentation in defender-for-identity/deploy/configure-windows-event-collection.md.

4 May 2026

Directory Service Accounts

Updated

Updated Microsoft Defender documentation in defender-for-identity/deploy/directory-service-accounts.md.

4 May 2026

Manage Action Accounts

Updated

Updated Microsoft Defender documentation in defender-for-identity/deploy/manage-action-accounts.md.

4 May 2026

Prerequisites Sensor Version 2

Updated

Updated Microsoft Defender documentation in defender-for-identity/deploy/prerequisites-sensor-version-2.md.

4 May 2026

Health Alerts

Updated

Updated Microsoft Defender documentation in defender-for-identity/health-alerts.md.

4 May 2026

Sensor Settings

Updated

Updated Microsoft Defender documentation in defender-for-identity/sensor-settings.md.

4 May 2026

Activate Sensor

Updated

Updated Microsoft Defender documentation in defender-for-identity/deploy/activate-sensor.md.

4 May 2026

Activate Sensor

Updated

Updated Microsoft Defender documentation in defender-for-identity/deploy/activate-sensor.md.

4 May 2026

Configure Event Collection

Updated

Updated Microsoft Defender documentation in defender-for-identity/deploy/configure-event-collection.md.

4 May 2026

Configure Port Mirroring

Updated

Updated Microsoft Defender documentation in defender-for-identity/deploy/configure-port-mirroring.md.

4 May 2026

Configure Sensor Settings

Updated

Updated Microsoft Defender documentation in defender-for-identity/deploy/configure-sensor-settings.md.

4 May 2026

Directory Service Accounts

Updated

Updated Microsoft Defender documentation in defender-for-identity/deploy/directory-service-accounts.md.

4 May 2026

Directory Service Accounts

Updated

Updated Microsoft Defender documentation in defender-for-identity/deploy/directory-service-accounts.md.

4 May 2026

Health Alerts

Updated

Updated Microsoft Defender documentation in defender-for-identity/health-alerts.md.

4 May 2026

Manage Action Accounts

Updated

Updated Microsoft Defender documentation in defender-for-identity/deploy/manage-action-accounts.md.

4 May 2026

Manage Action Accounts

Updated

Updated Microsoft Defender documentation in defender-for-identity/deploy/manage-action-accounts.md.

4 May 2026

Nnr Policy

Updated

Updated Microsoft Defender documentation in defender-for-identity/nnr-policy.md.

4 May 2026

Prerequisites Sensor Version 3

Updated

Updated Microsoft Defender documentation in defender-for-identity/deploy/prerequisites-sensor-version-3.md.

4 May 2026

Prerequisites Sensor Version 3

Updated

Updated Microsoft Defender documentation in defender-for-identity/deploy/prerequisites-sensor-version-3.md.

4 May 2026

Prerequisites Sensor Version 3

Updated

Updated Microsoft Defender documentation in defender-for-identity/deploy/prerequisites-sensor-version-3.md.

4 May 2026

Prerequisites Standalone

Updated

Updated Microsoft Defender documentation in defender-for-identity/deploy/prerequisites-standalone.md.

4 May 2026

Test Connectivity

Updated

Updated Microsoft Defender documentation in defender-for-identity/deploy/test-connectivity.md.

4 May 2026

Troubleshooting Known Issues

Updated

Updated Microsoft Defender documentation in defender-for-identity/troubleshooting-known-issues.md.

4 May 2026

Troubleshooting Known Issues

Updated

Updated Microsoft Defender documentation in defender-for-identity/troubleshooting-known-issues.md.

4 May 2026

Troubleshooting Using Logs

Updated

Updated Microsoft Defender documentation in defender-for-identity/troubleshooting-using-logs.md.

4 May 2026

Whats New Archive

Updated

Updated Microsoft Defender documentation in defender-for-identity/whats-new-archive.md.

4 May 2026

Download Sensor

Removed

Removed Microsoft Defender documentation in defender-for-identity/deploy/download-sensor.md.

4 May 2026

Event Collection Overview

Removed

Removed Microsoft Defender documentation in defender-for-identity/deploy/event-collection-overview.md.

4 May 2026

Prerequisites Sensor Version 3

Removed

Removed Microsoft Defender documentation in defender-for-identity/deploy/prerequisites-sensor-version-3.md.

4 May 2026
24

Deploy Defender Identity

Updated

Updated Microsoft Defender documentation in defender-for-identity/deploy/deploy-defender-identity.md.

7 May 2026

Deploy Defender Identity

Updated

Updated Microsoft Defender documentation in defender-for-identity/deploy/deploy-defender-identity.md.

7 May 2026

Deploy Sensor V3

Updated

Updated Microsoft Defender documentation in defender-for-identity/deploy/deploy-sensor-v3.md.

7 May 2026

Deploy Sensor V3

Updated

Updated Microsoft Defender documentation in defender-for-identity/deploy/deploy-sensor-v3.md.

4 May 2026

Deploy Defender Identity

Updated

Updated Microsoft Defender documentation in defender-for-identity/deploy/deploy-defender-identity.md.

4 May 2026

Deploy Sensor V3

Updated

Updated Microsoft Defender documentation in defender-for-identity/deploy/deploy-sensor-v3.md.

4 May 2026

Deploy Defender Identity

Updated

Updated Microsoft Defender documentation in defender-for-identity/deploy/deploy-defender-identity.md.

4 May 2026

Deploy Defender Identity

Updated

Updated Microsoft Defender documentation in defender-for-identity/deploy/deploy-defender-identity.md.

4 May 2026

Deploy Sensor V3

Updated

Updated Microsoft Defender documentation in defender-for-identity/deploy/deploy-sensor-v3.md.

4 May 2026

Deploy Defender Identity

Updated

Updated Microsoft Defender documentation in defender-for-identity/deploy/deploy-defender-identity.md.

4 May 2026

Deploy Defender Identity

Updated

Updated Microsoft Defender documentation in defender-for-identity/deploy/deploy-defender-identity.md.

4 May 2026

Deploy Defender Identity

Updated

Updated Microsoft Defender documentation in defender-for-identity/deploy/deploy-defender-identity.md.

4 May 2026

Deploy Sensor V3

Updated

Updated Microsoft Defender documentation in defender-for-identity/deploy/deploy-sensor-v3.md.

4 May 2026

Deploy Sensor V3

Updated

Updated Microsoft Defender documentation in defender-for-identity/deploy/deploy-sensor-v3.md.

4 May 2026

Deploy Sensor V3

Updated

Updated Microsoft Defender documentation in defender-for-identity/deploy/deploy-sensor-v3.md.

4 May 2026

Deploy Sensor V3

Updated

Updated Microsoft Defender documentation in defender-for-identity/deploy/deploy-sensor-v3.md.

4 May 2026
1

Whats New

Updated

Updated Microsoft Defender documentation in defender-for-identity/whats-new.md.

4 May 2026
16

Ai Agent Inventory

Updated

Updated Microsoft Defender documentation in defender-for-cloud-apps/ai-agent-inventory.md.

7 May 2026

Ai Agent Inventory

Updated

Updated Microsoft Defender documentation in defender-for-cloud-apps/ai-agent-inventory.md.

7 May 2026

Ai Agent Inventory

Updated

Updated Microsoft Defender documentation in defender-for-cloud-apps/ai-agent-inventory.md.

7 May 2026

Ai Agent Inventory

Updated

Updated Microsoft Defender documentation in defender-for-cloud-apps/ai-agent-inventory.md.

7 May 2026

Ai Agent Inventory

Updated

Updated Microsoft Defender documentation in defender-for-cloud-apps/ai-agent-inventory.md.

7 May 2026

Ai Agent Inventory

Updated

Updated Microsoft Defender documentation in defender-for-cloud-apps/ai-agent-inventory.md.

7 May 2026

Ai Agent Inventory

Updated

Updated Microsoft Defender documentation in defender-for-cloud-apps/ai-agent-inventory.md.

7 May 2026

Ai Agent Inventory

Updated

Updated Microsoft Defender documentation in defender-for-cloud-apps/ai-agent-inventory.md.

7 May 2026

Ai Agent Inventory

Updated

Updated Microsoft Defender documentation in defender-for-cloud-apps/ai-agent-inventory.md.

7 May 2026

Proxy Intro Aad

Updated

Updated Microsoft Defender documentation in defender-for-cloud-apps/proxy-intro-aad.md.

6 May 2026

Ai Agent Inventory

Updated

Updated Microsoft Defender documentation in defender-for-cloud-apps/ai-agent-inventory.md.

5 May 2026

Ai Agent Inventory

Updated

Updated Microsoft Defender documentation in defender-for-cloud-apps/ai-agent-inventory.md.

5 May 2026

App Governance Get Started

Updated

Updated Microsoft Defender documentation in defender-for-cloud-apps/app-governance-get-started.md.

5 May 2026
45

Siem Migration

Updated

Updated Microsoft Defender documentation in sentinel/siem-migration.md.

10 May 2026

Siem Migration

Updated

Updated Microsoft Defender documentation in sentinel/siem-migration.md.

10 May 2026

Siem Migration

Updated

Updated Microsoft Defender documentation in sentinel/siem-migration.md.

10 May 2026

Siem Migration

Updated

Updated Microsoft Defender documentation in sentinel/siem-migration.md.

10 May 2026

Siem Migration

Updated

Updated Microsoft Defender documentation in sentinel/siem-migration.md.

10 May 2026

Whats New

Updated

Updated Microsoft Defender documentation in sentinel/whats-new.md.

10 May 2026

Whats New

Updated

Updated Microsoft Defender documentation in sentinel/whats-new.md.

10 May 2026

Anomalies Reference

Updated

Updated Microsoft Defender documentation in sentinel/anomalies-reference.md.

8 May 2026

Enable Data Connectors

Updated

Updated Microsoft Defender documentation in sentinel/datalake/enable-data-connectors.md.

8 May 2026

Anomalies Reference

Updated

Updated Microsoft Defender documentation in sentinel/anomalies-reference.md.

8 May 2026

Whats New

Updated

Updated Microsoft Defender documentation in sentinel/whats-new.md.

8 May 2026

Whats New

Updated

Updated Microsoft Defender documentation in sentinel/whats-new.md.

8 May 2026

Ueba Reference

Updated

Updated Microsoft Defender documentation in sentinel/ueba-reference.md.

8 May 2026

Customer Managed Keys

Updated

Updated Microsoft Defender documentation in sentinel/customer-managed-keys.md.

7 May 2026

Customer Managed Keys

Updated

Updated Microsoft Defender documentation in sentinel/customer-managed-keys.md.

7 May 2026

Roles

Updated

Updated Microsoft Defender documentation in sentinel/roles.md.

7 May 2026

Whats New

Updated

Updated Microsoft Defender documentation in sentinel/whats-new.md.

6 May 2026

Whats New

Updated

Updated Microsoft Defender documentation in sentinel/whats-new.md.

6 May 2026

Billing

Updated

Updated Microsoft Defender documentation in sentinel/billing.md.

6 May 2026

Feature Availability

Updated

Updated Microsoft Defender documentation in sentinel/feature-availability.md.

6 May 2026

Simplified

Updated

Updated Microsoft Defender documentation in sentinel/billing.md.

5 May 2026

Scoping

Removed

Removed Microsoft Defender documentation in sentinel/scoping.md.

5 May 2026

Investigate Incidents

Updated

Updated Microsoft Defender documentation in sentinel/investigate-incidents.md.

4 May 2026

Investigate Incidents

Updated

Updated Microsoft Defender documentation in sentinel/investigate-incidents.md.

4 May 2026
2

Roles

Updated

Updated Microsoft Defender documentation in sentinel/roles.md.

7 May 2026

Roles

Updated

Updated Microsoft Defender documentation in sentinel/roles.md.

7 May 2026
1

Deploy Overview

Updated

Updated Microsoft Defender documentation in sentinel/deploy-overview.md.

4 May 2026
1
1

Fixed Reported Inaccuracies

Updated

Updated Microsoft Defender documentation in defender-vulnerability-management/fixed-reported-inaccuracies.md.

4 May 2026
1

Mdb Asr

Updated

Updated Microsoft Defender documentation in defender-business/mdb-asr.md.

6 May 2026
1
10

Microsoft Sentinel Onboard

Updated

Updated Microsoft Defender documentation in unified-secops-platform/microsoft-sentinel-onboard.md.

10 May 2026

Microsoft Sentinel Onboard

Updated

Updated Microsoft Defender documentation in unified-secops-platform/microsoft-sentinel-onboard.md.

10 May 2026

Microsoft Sentinel Onboard

Updated

Updated Microsoft Defender documentation in unified-secops-platform/microsoft-sentinel-onboard.md.

10 May 2026

Microsoft Sentinel Onboard

Updated

Updated Microsoft Defender documentation in unified-secops-platform/microsoft-sentinel-onboard.md.

10 May 2026

Microsoft Sentinel Onboard

Updated

Updated Microsoft Defender documentation in unified-secops-platform/microsoft-sentinel-onboard.md.

6 May 2026

Microsoft Sentinel Onboard

Updated

Updated Microsoft Defender documentation in unified-secops-platform/microsoft-sentinel-onboard.md.

6 May 2026

Microsoft Sentinel Onboard

Updated

Updated Microsoft Defender documentation in unified-secops-platform/microsoft-sentinel-onboard.md.

6 May 2026

Microsoft Sentinel Onboard

Updated

Updated Microsoft Defender documentation in unified-secops-platform/microsoft-sentinel-onboard.md.

5 May 2026

Microsoft Sentinel Onboard

Updated

Updated Microsoft Defender documentation in unified-secops-platform/microsoft-sentinel-onboard.md.

5 May 2026

Plan

Updated

Updated Microsoft Defender documentation in unified-secops-platform/overview-plan.md.

4 May 2026
2

Defender Portal

Updated

Updated Microsoft Defender documentation in unified-secops-platform/overview-defender-portal.md.

7 May 2026