Microsoft Defender for Endpoint
Endpoint protectionMicrosoft Defender Endpoint Releases
In brief
The macOS 101.26082.0012 release adds EDR support for configuring AI agent runtime protection, plus Bluetooth permission and antivirus health reporting improvements, accessibility updates, reliability fixes, and performance fixes.
What Defender admins need to know
MacOS administrators should review the new EDR configuration support and updated health reporting when assessing this release.
Summaries are generated from the documentation change itself.
Documentation change
View on Microsoft LearnThe comparison below shows only the changed extract. Use the full-page view for complete context.
| OS | Build | Month released | Details | Learn more |
|---|---|---|---|---|
| macOS | 101.26082.0012 | October 2026 | - Release version: 20.126082.12.0- Engine version: 1.1.26100.3000- Signature version: 1.461.61.0 | Release details and updates |
| Linux | 101.26091.0003 | October 2026 | - Release version: 30.126091.0003.0- Engine version: 1.1.26090.3000- Signature version: 1.461.35.0 | Release details and updates |
| Windows Antivirus | Platform 4.18.26090.9 / Engine 1.1.26090.9 | September 2026 | - Platform: 4.18.26090.9- Engine: 1.1.26090.9- Security intelligence: 1.461.1.0 | Release details and updates |
| Windows Antivirus | Platform 4.18.26080.4 / Engine 1.1.26080.3 | August 2026 | - Platform: 4.18.26080.4- Engine: 1.1.26080.3- Security intelligence: 1.159.11.0 | Release details and updates |
For known issues, see macOS known issues.
macOS | October-2026 | 101.26082.0012
Versions
| Release version | Engine version | Signature version |
|---|---|---|
| 20.126082.12.0 | 1.1.26100.3000 | 1.461.61.0 |
Enhancements and features
| Feature area | Update summary |
|---|---|
| General | Device Control: Device health reporting now shows Bluetooth permission status. |
| General | UI: Improved keyboard accessibility in side panes by moving focus into the open pane and keeping Tab navigation within its controls. |
| General | UI: Improved accessibility of feedback rating controls so individual stars can receive focus without an extra group focus target. |
| General | Antivirus: Improved health reporting to indicate when the protection engine connection is unavailable. |
| General | Antivirus: Improved reliability by preventing a rare service crash. |
| General | EDR: Added support for configuring AI agent runtime protection on macOS. |
| General | EDR: Improved authentication reliability after startup and wake by waiting for network connectivity to recover before resuming cloud communication. |
| General | Bug and performance fixes. |
macOS | September-2026 | 101.26072.0017
Versions
@@ -15,7 +15,7 @@ author: abhisheksh ms.author: abhisheksh ms.reviewer: noamhadash, pahuijbr, yongrhee ms.localizationpriority: medium-ms.date: 2026-10-12T00:00:00.0000000Z+ms.date: 2026-10-16T00:00:00.0000000Z ai-usage: ai-assisted locale: en-us document_id: a82695da-2a19-ab7b-fd85-324ba1ae897f@@ -59,6 +59,7 @@ This table includes supported releases for all supported platforms in the past s
| OS | Build | Month released | Details | Learn more |
| --- | --- | --- | --- | --- |
+| macOS | 101.26082.0012 | October 2026 | - Release version: 20.126082.12.0- Engine version: 1.1.26100.3000- Signature version: 1.461.61.0 | Release details and updates |
| Linux | 101.26091.0003 | October 2026 | - Release version: 30.126091.0003.0- Engine version: 1.1.26090.3000- Signature version: 1.461.35.0 | Release details and updates |
| Windows Antivirus | Platform 4.18.26090.9 / Engine 1.1.26090.9 | September 2026 | - Platform: 4.18.26090.9- Engine: 1.1.26090.9- Security intelligence: 1.461.1.0 | Release details and updates |
| Windows Antivirus | Platform 4.18.26080.4 / Engine 1.1.26080.3 | August 2026 | - Platform: 4.18.26080.4- Engine: 1.1.26080.3- Security intelligence: 1.159.11.0 | Release details and updates |
@@ -274,6 +275,27 @@ To get latest features, configure your device for the Beta channel (formerly Ins
For known issues, see macOS known issues.
+### macOS | October-2026 | 101.26082.0012
+
+#### Versions
+
+| Release version | Engine version | Signature version |
+| --- | --- | --- |
+| 20.126082.12.0 | 1.1.26100.3000 | 1.461.61.0 |
+
+#### Enhancements and features
+
+| Feature area | Update summary |
+| --- | --- |
+| General | Device Control: Device health reporting now shows Bluetooth permission status. |
+| General | UI: Improved keyboard accessibility in side panes by moving focus into the open pane and keeping Tab navigation within its controls. |
+| General | UI: Improved accessibility of feedback rating controls so individual stars can receive focus without an extra group focus target. |
+| General | Antivirus: Improved health reporting to indicate when the protection engine connection is unavailable. |
+| General | Antivirus: Improved reliability by preventing a rare service crash. |
+| General | EDR: Added support for configuring AI agent runtime protection on macOS. |
+| General | EDR: Improved authentication reliability after startup and wake by waiting for network connectivity to recover before resuming cloud communication. |
+| General | Bug and performance fixes. |
+
### macOS | September-2026 | 101.26072.0017
#### Versions