Microsoft Defender for Endpoint
Endpoint protectionMicrosoft Defender Endpoint Releases
In brief
The release notes now list macOS version 101.26092.0012, its release, engine, and signature versions, plus bug and performance fixes and optimized memory usage during package scanning.
What Defender admins need to know
Administrators can use the updated version information to identify the release and its documented memory-usage improvement. No action 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 | 101.26092.0012 | November 2026 | - Release version: 20.126092.12.0- Engine version: 1.1.26100.3000- Signature version: 1.463.110.0 | Release details and updates |
| Linux | 101.26101.0000 | November 2026 | - Release version: 30.126101.0000.0- Engine version: 1.1.26090.3000- Signature version: 1.459.148.0 | Release details and updates |
| Windows Antivirus | Platform 4.18.26100.4 / Engine 1.1.26100.4 | October 2026 | - Platform: 4.18.26100.4- Engine: 1.1.26100.4- Security intelligence: 1.463.1.0 | Release details and updates |
| 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 |
For known issues, see macOS known issues.
macOS | November-2026 | 101.26092.0012
Versions
| Release version | Engine version | Signature version |
|---|---|---|
| 20.126092.12.0 | 1.1.26100.3000 | 1.463.110.0 |
Enhancements and features
| Feature area | Update summary |
|---|---|
| General | Bug and performance fixes |
macOS | October-2026 | 101.26092.0009
Versions
| --- | --- | | Security | Upgraded OpenSSL version to 3.6.4 | | Bug fix | Fixed missing CentOS minor patch version in the Defender portal | | General | Optimized memory usage during package scanning |
Linux | October 2026 | 101.26091.0004
@@ -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 | 101.26092.0012 | November 2026 | - Release version: 20.126092.12.0- Engine version: 1.1.26100.3000- Signature version: 1.463.110.0 | Release details and updates |
| Linux | 101.26101.0000 | November 2026 | - Release version: 30.126101.0000.0- Engine version: 1.1.26090.3000- Signature version: 1.459.148.0 | Release details and updates |
| Windows Antivirus | Platform 4.18.26100.4 / Engine 1.1.26100.4 | October 2026 | - Platform: 4.18.26100.4- Engine: 1.1.26100.4- Security intelligence: 1.463.1.0 | Release details and updates |
| 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 |
@@ -281,6 +282,20 @@ To get latest features, configure your device for the Beta channel (formerly Ins
For known issues, see macOS known issues.
+### macOS | November-2026 | 101.26092.0012
+
+#### Versions
+
+| Release version | Engine version | Signature version |
+| --- | --- | --- |
+| 20.126092.12.0 | 1.1.26100.3000 | 1.463.110.0 |
+
+#### Enhancements and features
+
+| Feature area | Update summary |
+| --- | --- |
+| General | Bug and performance fixes |
+
### macOS | October-2026 | 101.26092.0009
#### Versions
@@ -681,7 +696,7 @@ Starting with version `101.24082.0004`, Defender for Endpoint on Linux no longer | --- | --- |
| Security | Upgraded OpenSSL version to 3.6.4 |
| Bug fix | Fixed missing CentOS minor patch version in the Defender portal |
-| General | |
+| General | Optimized memory usage during package scanning |
### Linux | October 2026 | 101.26091.0004