Release Notes
In brief
On October 20, 2026, the expanded server security experience will support automated and manual onboarding for Azure, Azure Arc-enabled, Windows, Linux, and on-premises servers. Cloud security plan management will also become available in the Defender portal, including DWU cost tracking and eligible 30-day trials.
What Defender admins need to know
Administrators can manage cloud security plans in the Defender portal; Azure portal settings become view-only, and migrated subscriptions use DWU-based billing. Existing Defender for Endpoint installations do not require reinstallation or migration.
Summaries are generated from the documentation change itself.
Documentation change
The comparison below shows only the changed extract. Use the full-page view for complete context.
| Date | Category | Update |
|---|---|---|
| October 20, 2026 | Public preview | Expanded server onboarding experience |
| October 20, 2026 | Public preview | Cloud security plan management in the Defender portal |
| October 6, 2026 | Public preview | New Defender server security experience |
| October 5, 2026 | GA | KSPM misconfiguration recommendations moving to controller-level scope |
| October 5, 2026 | GA | On-demand malware scanning now supports scanning specific blobs, files, containers, and file shares |
Expanded server onboarding experience
October 20, 2026
The new Defender server security experience expands to include onboarding guidance for Azure and on-premises servers, building on the investigation and access management capabilities released on October 6.
With this update, you can:
- Onboard supported Azure virtual machines and Azure Arc-enabled servers automatically through Defender for Servers.
- Choose a supported deployment method to onboard Windows and Linux servers manually to Defender for Endpoint.
- Connect on-premises servers to Defender for Servers by using Azure Arc or Direct onboarding.
- Verify server onboarding and review available offboarding methods.
Servers already running Defender for Endpoint don't require reinstallation or migration to maintain their existing protection.
For more information, see:
- Onboard servers to Microsoft Defender.
- Connect on-premises servers to Defender for Servers.
- Use Direct onboarding for on-premises servers.
- Offboard servers from Microsoft Defender.
Cloud security plan management in the Defender portal
October 20, 2026
Cloud security plan management is scheduled to become available in public preview in the Microsoft Defender portal for Azure commercial environments on October 20, 2026.
With this experience, you can:
- Connect Azure subscriptions and management groups to cloud security in the Defender portal.
- Enable and manage cloud security plans globally across connected environments or configure plans for selected management groups and subscriptions.
- Estimate and track Cloud security costs, including cost under the new billing model, where usage is measured in Defender Workload Units (DWUs).
- Start a 30-day free trial for eligible cloud security plans when enabling plans.
When plan management moves to the Defender portal, plan configuration will be managed in the Defender portal and become view-only in the Azure portal. Migrated subscriptions will use DWU-based billing.
For more information, see Microsoft Defender for Cloud in the Microsoft Defender portal.
New Defender server security experience
October 6, 2026
@@ -61,10 +61,51 @@ Get notified when this page is updated by copying and pasting the following URL
| Date | Category | Update |
| --- | --- | --- |
+| October 20, 2026 | Public preview | Expanded server onboarding experience |
+| October 20, 2026 | Public preview | Cloud security plan management in the Defender portal |
| October 6, 2026 | Public preview | New Defender server security experience |
| October 5, 2026 | GA | KSPM misconfiguration recommendations moving to controller-level scope |
| October 5, 2026 | GA | On-demand malware scanning now supports scanning specific blobs, files, containers, and file shares |
+### Expanded server onboarding experience
+
+October 20, 2026
+
+The new Defender server security experience expands to include onboarding guidance for Azure and on-premises servers, building on the investigation and access management capabilities released on October 6.
+
+With this update, you can:
+
+- Onboard supported Azure virtual machines and Azure Arc-enabled servers automatically through Defender for Servers.
+- Choose a supported deployment method to onboard Windows and Linux servers manually to Defender for Endpoint.
+- Connect on-premises servers to Defender for Servers by using Azure Arc or Direct onboarding.
+- Verify server onboarding and review available offboarding methods.
+
+Servers already running Defender for Endpoint don't require reinstallation or migration to maintain their existing protection.
+
+For more information, see:
+
+- [Onboard servers to Microsoft Defender](/en-us/defender-endpoint/onboard-server).
+- [Connect on-premises servers to Defender for Servers](/en-us/azure/defender-for-cloud/quickstart-onboard-machines).
+- [Use Direct onboarding for on-premises servers](/en-us/azure/defender-for-cloud/onboard-machines-with-defender-for-endpoint).
+- [Offboard servers from Microsoft Defender](/en-us/defender-endpoint/offboard-machines#offboard-servers).
+
+### Cloud security plan management in the Defender portal
+
+October 20, 2026
+
+Cloud security plan management is scheduled to become available in public preview in the Microsoft Defender portal for Azure commercial environments on October 20, 2026.
+
+With this experience, you can:
+
+- Connect Azure subscriptions and management groups to cloud security in the Defender portal.
+- Enable and manage cloud security plans globally across connected environments or configure plans for selected management groups and subscriptions.
+- Estimate and track Cloud security costs, including cost under the new billing model, where usage is measured in Defender Workload Units (DWUs).
+- Start a 30-day free trial for eligible cloud security plans when enabling plans.
+
+When plan management moves to the Defender portal, plan configuration will be managed in the Defender portal and become view-only in the Azure portal. Migrated subscriptions will use DWU-based billing.
+
+For more information, see [Microsoft Defender for Cloud in the Microsoft Defender portal](defender-portal/defender-for-cloud-defender-portal).
+
### New Defender server security experience
October 6, 2026
