Microsoft Defender for Endpoint
Endpoint protectionMicrosoft Defender Endpoint Releases
In brief
The documentation adds macOS version 101.26092.0009 release notes, including improved policy reliability, antivirus performance and health reporting, EDR updates, and the retirement of Legacy Device Control v1.
What Defender admins need to know
Administrators should account for the Device Control v1 retirement; new health reporting helps verify Bluetooth permissions and Microsoft Defender system-extension configuration. No required action or deadline is stated.
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 | 101.26092.0009 | October 2026 | - Release version: 20.126092.9.0- Engine version: 1.1.26060.12000- Signature version: 1.453.151.0 | Release details and updates |
| Linux | 101.26091.0004 | October 2026 | - Release version: 30.126091.0004.0- Engine version: 1.1.26070.5001- Signature version: 1.457.364.0 | Release details and updates |
| Android | 1.0.9406.0102 | Oct 2026 | - Build: 1.0.9406.0102- Release: Oct 23, 2026 | Release details and updates |
| 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 |
For known issues, see macOS known issues.
macOS | October-2026 | 101.26092.0009
Versions
| Release version | Engine version c | Signature version |
|---|---|---|
| 20.126092.9.0 | 1.1.26060.12000 | 1.453.151.0 |
Enhancements and features
| Feature area | Update summary |
|---|---|
| General | Agent Protection: Improved reliability when applying managed protection policies. |
| General | Antivirus: Reduced CPU usage during high-volume file activity by. |
| General | Antivirus: Improved service reliability. |
| General | Antivirus: Improved health reporting to indicate when the protection engine connection is unavailable. |
| General | Antivirus: Added health reporting to help administrators verify that managed configuration profiles are correctly set up for Microsoft Defender system extensions. |
| General | Antivirus: Review recent performance profile suggestions and apply or remove eligible profiles directly in the Defender app. |
| General | Device Control: Legacy Device Control v1 is retired. |
| General | Device Control: Device health reporting now shows Bluetooth permission status, helping administrators verify that Device Control is configured correctly. |
| General | EDR: Improved authentication reliability after startup and wake. |
| General | EDR: Added support for configuring AI agent runtime protection on macOS. |
| General | EDR: Improved macOS device isolation. |
| General | GUI: Improved accessibility. |
| General | TVM: Improved software inventory reporting for macOS applications that do not provide standard display-name metadata. |
| General | Bug and performance fixes |
macOS | October-2026 | 101.26082.0012
Versions
@@ -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 | 101.26092.0009 | October 2026 | - Release version: 20.126092.9.0- Engine version: 1.1.26060.12000- Signature version: 1.453.151.0 | Release details and updates |
| Linux | 101.26091.0004 | October 2026 | - Release version: 30.126091.0004.0- Engine version: 1.1.26070.5001- Signature version: 1.457.364.0 | Release details and updates |
| Android | 1.0.9406.0102 | Oct 2026 | - Build: 1.0.9406.0102- Release: Oct 23, 2026 | Release details and updates |
| 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 |
@@ -277,6 +278,33 @@ To get latest features, configure your device for the Beta channel (formerly Ins
For known issues, see macOS known issues.
+### macOS | October-2026 | 101.26092.0009
+
+#### Versions
+
+| Release version | Engine version c | Signature version |
+| --- | --- | --- |
+| 20.126092.9.0 | 1.1.26060.12000 | 1.453.151.0 |
+
+#### Enhancements and features
+
+| Feature area | Update summary |
+| --- | --- |
+| General | Agent Protection: Improved reliability when applying managed protection policies. |
+| General | Antivirus: Reduced CPU usage during high-volume file activity by. |
+| General | Antivirus: Improved service reliability. |
+| General | Antivirus: Improved health reporting to indicate when the protection engine connection is unavailable. |
+| General | Antivirus: Added health reporting to help administrators verify that managed configuration profiles are correctly set up for Microsoft Defender system extensions. |
+| General | Antivirus: Review recent performance profile suggestions and apply or remove eligible profiles directly in the Defender app. |
+| General | Device Control: Legacy Device Control v1 is retired. |
+| General | Device Control: Device health reporting now shows Bluetooth permission status, helping administrators verify that Device Control is configured correctly. |
+| General | EDR: Improved authentication reliability after startup and wake. |
+| General | EDR: Added support for configuring AI agent runtime protection on macOS. |
+| General | EDR: Improved macOS device isolation. |
+| General | GUI: Improved accessibility. |
+| General | TVM: Improved software inventory reporting for macOS applications that do not provide standard display-name metadata. |
+| General | Bug and performance fixes |
+
### macOS | October-2026 | 101.26082.0012
#### Versions