Microsoft Defender Antivirus security intelligence and product updates
Applies to:
- Microsoft Defender for Endpoint Plans 1 and 2
- Microsoft Defender Antivirus
Platforms
- Windows
Keeping Microsoft Defender Antivirus up to date is critical to assure your devices have the latest technology and features needed to protect against new malware and attack techniques. Make sure to update your antivirus protection, even if Microsoft Defender Antivirus is running in passive mode. There are two types of updates related to keeping Microsoft Defender Antivirus up to date:
Tip
To see the most current engine, platform, and signature date, visit the Security intelligence updates for Microsoft Defender Antivirus and other Microsoft antimalware
Security intelligence updates
Microsoft Defender Antivirus uses cloud-delivered protection (also called the Microsoft Advanced Protection Service, or MAPS) and periodically downloads dynamic security intelligence updates to provide more protection. These dynamic updates don't take the place of regular security intelligence updates via security intelligence update KB2267602.
Note
Updates are released under the following KBs:
- Microsoft Defender Antivirus: KB2267602
- System Center Endpoint Protection: KB2461484
Cloud-delivered protection is always on and requires an active connection to the Internet to function. Security intelligence updates occur on a scheduled cadence (configurable via policy). For more information, see Use Microsoft cloud-provided protection in Microsoft Defender Antivirus.
For a list of recent security intelligence updates, see Security intelligence updates for Microsoft Defender Antivirus and other Microsoft antimalware.
Engine updates are included with security intelligence updates and are released on a monthly cadence.
Product updates
Microsoft Defender Antivirus requires monthly updates (KB4052623) known as platform updates.
You can manage the distribution of updates through one of the following methods:
- Windows Server Update Service (WSUS)
- Microsoft Configuration Manager
- The usual methods you use to deploy Microsoft and Windows updates to endpoints in your network.
For more information, see Manage the sources for Microsoft Defender Antivirus protection updates.
Note
- Monthly updates are released in phases, resulting in multiple packages visible in your Window Server Update Services.
- This article lists changes that are included in the broad release channel. See the latest broad channel release here.
- To learn more about the gradual rollout process, and to see more information about the next release, see Manage the gradual rollout process for Microsoft Defender updates.
- To learn more about security intelligence updates, see Security intelligence updates for Microsoft Defender Antivirus and other Microsoft antimalware.
- If you're looking for a list of Microsoft Defender processes, download the mde-urls workbook, and then select the Microsoft Defender Processes worksheet. The
mde-urls
workbook also lists the services and their associated URLs that your network must be able to connect to, as described in Enable access to Microsoft Defender for Endpoint service URLs in the proxy server.
Monthly platform and engine versions
For information how to update or install the platform update, see Update for Windows Defender antimalware platform.
All our updates contain
- Performance improvements
- Serviceability improvements
- Integration improvements (Cloud, Microsoft 365 Defender)
February-2023 (Platform: 4.18.2302.x | Engine: 1.1.20100.6)
- Security intelligence update version: 1.385.68.0
- Release date: March 14, 2023
- Platform: 4.18.2302.x
- Engine: 1.1.20100.6
- Support phase: Security and Critical Updates
What's new
- Improvements in the contextual exclusions syntax
- Improved scheduled scan robustness
- Improved serviceability for internal database files
- Enhanced certificate indicators determination logic
- Enhanced memory usage
Known Issues
- None
January-2023 (Platform: 4.18.2301.6 | Engine: 1.1.20000.2)
- Security intelligence update version: 1.383.26.0
- Release date: February 14, 2023
- Platform: 4.18.2301.6
- Engine: 1.1.20000.2
- Support phase: Security and Critical Updates
What's new
- Improved ASR rule processing logic
- Updated Sense token hardening
- Improved Defender CSP module update channel logic
Known Issues
- None
November-2022 (Platform: 4.18.2211.5 | Engine: 1.1.19900.2)
- Security intelligence update version: 1.381.144.0
- Release date: December 8, 2022
- Platform: 4.18.2211.5
- Engine: 1.1.19900.2
What's new
- Enhanced threat protection capabilities
- Improved tamper protection capabilities
- Enhanced enabling of tamper protection for newly onboarded devices
- Improved reporting for cloud protection
- Improved controlled folder access notifications
- Improved scanning of network shares
- Enhanced processing of host files containing a wild card
- Improved performance for scan events
Known Issues
- None
Previous version updates: Technical upgrade support only
After a new package version is released, support for the previous two versions is reduced to technical support only. For more information about previous versions, see Microsoft Defender Antivirus updates: Previous versions for technical upgrade support.
Microsoft Defender Antivirus platform support
Platform and engine updates are provided on a monthly cadence. To be fully supported, keep current with the latest platform updates. Our support structure is dynamic, evolving into two phases depending on the availability of the latest platform version:
Security and Critical Updates servicing phase - When running the latest platform version, you're eligible to receive both Security and Critical updates to the anti-malware platform.
Technical Support (Only) phase - After a new platform version is released, support for older versions (N-2) will reduce to technical support only. Platform versions older than N-2 will no longer be supported.*
* Technical support continues to be provided for upgrades from the Windows 10 release version (see Platform version included with Windows 10 releases) to the latest platform version.
During the technical support (only) phase, commercially reasonable support incidents will be provided through Microsoft Customer Service & Support and Microsoft's managed support offerings (such as Premier Support). If a support incident requires escalation to development for further guidance, requires a non-security update, or requires a security update, customers will be asked to upgrade to the latest platform version or an intermediate update (*).
Note
If you are manually deploying Microsoft Defender Antivirus Platform Update, or if you are using a script or a non-Microsoft management product to deploy Microsoft Defender Antivirus Platform Update, make sure that version 4.18.2001.10
is installed from the Microsoft Update Catalog before the latest version of Platform Update (N-2) is installed.
How to roll back an update
In the unfortunate event that you encounter issues after a platform update, you can roll back to the previous or the inbox version of the Microsoft Defender platform.
- To roll back to the previous version, run the following command:
"%programdata%\Microsoft\Windows Defender\Platform\<version>\MpCmdRun.exe" -RevertPlatform
- To roll back this update to the version shipped with the Operating System ("%ProgramFiles%\Windows Defender")
"%programdata%\Microsoft\Windows Defender\Platform\<version>\MpCmdRun.exe" -ResetPlatform
Platform version included with Windows 10 releases
The below table provides the Microsoft Defender Antivirus platform and engine versions that are shipped with the latest Windows 10 releases:
Windows 10 release | Platform version | Engine version | Support phase |
---|---|---|---|
2004 (20H1/20H2) | 4.18.1909.6 |
1.1.17000.2 |
Technical upgrade support (only) |
1909 (19H2) | 4.18.1902.5 |
1.1.16700.3 |
Technical upgrade support (only) |
1903 (19H1) | 4.18.1902.5 |
1.1.15600.4 |
Technical upgrade support (only) |
1809 (RS5) | 4.18.1807.5 |
1.1.15000.2 |
Technical upgrade support (only) |
1803 (RS4) | 4.13.17134.1 |
1.1.14600.4 |
Technical upgrade support (only) |
1709 (RS3) | 4.12.16299.15 |
1.1.14104.0 |
Technical upgrade support (only) |
1703 (RS2) | 4.11.15603.2 |
1.1.13504.0 |
Technical upgrade support (only) |
1607 (RS1) | 4.10.14393.3683 |
1.1.12805.0 |
Technical upgrade support (only) |
For Windows 10 release information, see the Windows lifecycle fact sheet.
Updates for Deployment Image Servicing and Management (DISM)
We recommend updating your Windows 10 (Enterprise, Pro, and Home editions), Windows Server 2019, Windows Server 2022, Windows Server 2016, and Windows Server 2012 R2 OS installation images with the latest antivirus and antimalware updates. Keeping your OS installation images up to date helps avoid a gap in protection.
For more information, see Microsoft Defender update for Windows operating system installation images.
20230308.1
- Defender package version: 20230308.1
- Security intelligence version: 1.383.1321.0
- Engine version: 1.1.20000.2
- Platform version: 4.18.2301.6
Fixes
- None
Additional information
- None
20230215.1
- Defender package version: 20230215.1
- Security intelligence version: 1.383.51.0
- Engine version: 1.1.20000.2
- Platform version: 4.18.2301.6
Fixes
- None
Additional information
- None
20230118.1
- Defender package version: 20230118.1
- Security intelligence version: 1.381.2404.0
- Engine version: 1.1.19900.2
- Platform version: 4.18.2211.5
Fixes
- None
Additional information
- None
20221209.1
- Defender package version: 20221209.1
- Security intelligence version: 1.381.144.0
- Engine version: 1.1.19900.2
- Platform version: 4.18.2211.5
Fixes
- None
Additional information
- None
20221102.3
- Defender package version: 20221102.3
- Security intelligence version: 1.377.1180.0
- Engine version: 1.1.19700.3
- Platform version: 4.18.2210.4
Fixes
- None
Additional information
- None
20221014.1
- Package version: 20221014.1
- Platform version: 4.18.2209.7
- Engine version: 1.1.19700.3
- Signature version: 1.373.208.0
Fixes
- None
Additional information
- None
20220929.1
- Package version: 20220929.1
- Platform version: 4.18.2207.7
- Engine version: 1.1.19600.3
- Signature version: 1.373.1243.0
Fixes
- None
Additional information
- None
20220925.2
- Package version: 20220925.2
- Platform version: 4.18.2207.7
- Engine version: 1.1.19600.3
- Signature version: 1.373.1371.0
Fixes
- None
Additional information
- None
20220901.4
- Package version: 20220901.4
- Platform version: 4.18.2205.7
- Engine version: 1.1.19500.2
- Signature version: 1.373.1371.0
Fixes
- None
Additional information
- None
20220802.1
- Package version: 20220802.1
- Platform version: 4.18.2205.7
- Engine version: 1.1.19400.3
- Signature version: 1.371.1205.0
Fixes
- None
Additional information
- None
20220629.5
- Package version: 20220629.5
- Platform version: 4.18.2205.7
- Engine version: 1.1.19300.2
- Signature version: 1.369.220.0
Fixes
- None
Additional information
- None
20220603.3
- Package version: 20220603.3
- Platform version: 4.18.2203.5
- Engine version: 1.1.19200.6
- Signature version: 1.367.1009.0
Fixes
- None
Additional information
- None
20220506.6
- Package version: 20220506.6
- Platform version: 4.18.2203.5
- Engine version: 1.1.19200.5
- Signature version: 1.363.1436.0
Fixes
- None
Additional information
- None
20220321.1
- Package version: 20220321.1
- Platform version: 4.18.2202.4
- Engine version: 1.1.19000.8
- Signature version: 1.351.337.0
Fixes
- None
Additional information
- None
20220305.1
- Package version: 20220305.1
- Platform version: 4.18.2201.10
- Engine version: 1.1.18900.3
- Signature version: 1.359.1405.0
Fixes
- None
Additional information
- None
20220203.1
- Package version: 20220203.1
- Platform version: 4.18.2111.5
- Engine version: 1.1.18900.2
- Signature version: 1.357.32.0
Fixes
- None
Additional information
- None
20220105.1
- Package version: 20220105.1
- Platform version: 4.18.2111.5
- Engine version: 1.1.18800.4
- Signature version: 1.355.1482.0
Fixes
- None
Additional information
- None
1.1.2112.01
- Package version: 1.1.2112.01
- Platform version: 4.18.2110.6
- Engine version: 1.1.18700.4
- Signature version: 1.353.2283.0
Fixes
- None
Additional information
- None
1.1.2111.02
- Package version: 1.1.2111.02
- Platform version: 4.18.2110.6
- Engine version: 1.1.18700.4
- Signature version: 1.353.613.0
Fixes
- Fixed an issue pertaining to localization files
Additional information
- None
1.1.2110.01
- Package version: 1.1.2110.01
- Platform version: 4.18.2109.6
- Engine version: 1.1.18500.10
- Signature version: 1.349.2103.0
Fixes
- None
Additional information
- None
1.1.2109.01
- Package version: 1.1.2109.01
- Platform version: 4.18.2107.4
- Engine version: 1.1.18400.5
- Signature version: 1.347.891.0
Fixes
- None
Additional information
- None
1.1.2108.01
- Package version: 1.1.2108.01
- Platform version: 4.18.2107.4
- Engine version: 1.1.18300.4
- Signature version: 1.343.2244.0
Fixes
- None
Additional information
- None
1.1.2107.02
- Package version: 1.1.2107.02
- Platform version: 4.18.2105.5
- Engine version: 1.1.18300.4
- Signature version: 1.343.658.0
Fixes
- None
Additional information
- None
1.1.2106.01
- Package version: 1.1.2106.01
- Platform version: 4.18.2104.14
- Engine version: 1.1.18100.6
- Signature version: 1.339.1923.0
Fixes
- None
Additional information
- None
1.1.2105.01
- Package version: 1.1.2105.01
- Platform version: 4.18.2103.7
- Engine version: 1.1.18100.6
- Signature version: 1.339.42.0
Fixes
- None
Additional information
- None
1.1.2104.01
- Package version: 1.1.2104.01
- Platform version: 4.18.2102.4
- Engine version: 1.1.18000.5
- Signature version: 1.335.232.0
Fixes
- None
Additional information
- None
1.1.2103.01
- Package version: 1.1.2103.01
- Platform version: 4.18.2101.9
- Engine version: 1.1.17800.5
- Signature version: 1.331.2302.0
Fixes
- None
Additional information
- None
1.1.2102.03
- Package version: 1.1.2102.03
- Platform version: 4.18.2011.6
- Engine version: 1.1.17800.5
- Signature version: 1.331.174.0
Fixes
- None
Additional information
- None
1.1.2101.02
- Package version: 1.1.2101.02
- Platform version: 4.18.2011.6
- Engine version: 1.1.17700.4
- Signature version: 1.329.1796.0
Fixes
- None
Additional information
- None
1.1.2012.01
- Package version: 1.1.2012.01
- Platform version: 4.18.2010.7
- Engine version: 1.1.17600.5
- Signature version: 1.327.1991.0
Fixes
- None
Additional information
- None
1.1.2011.02
- Package version: 1.1.2011.02
- Platform version: 4.18.2010.7
- Engine version: 1.1.17600.5
- Signature version: 1.327.658.0
Fixes
- None
Additional information
- Refreshed Microsoft Defender Antivirus signatures
1.1.2011.01
- Package version: 1.1.2011.01
- Platform version: 4.18.2009.7
- Engine version: 1.1.17600.5
- Signature version: 1.327.344.0
Fixes
- None
Additional information
- None
1.1.2009.10
- Package version: 1.1.2011.01
- Platform version: 4.18.2008.9
- Engine version: 1.1.17400.5
- Signature version: 1.327.2216.0
Fixes
- None
Additional information
- Added support for Windows 10 RS1 or later OS install images.
More resources
Article | Description |
---|---|
Microsoft Defender update for Windows operating system installation images | Review antimalware update packages for your OS installation images (WIM and VHD files). Get Microsoft Defender Antivirus updates for Windows 10 (Enterprise, Pro, and Home editions), Windows Server 2019, Windows Server 2022, Windows Server 2016, and Windows Server 2012 R2 installation images. |
Manage how protection updates are downloaded and applied | Protection updates can be delivered through many sources. |
Manage when protection updates should be downloaded and applied | You can schedule when protection updates should be downloaded. |
Manage updates for endpoints that are out of date | If an endpoint misses an update or scheduled scan, you can force an update or scan the next time a user signs in. |
Manage event-based forced updates | You can set protection updates to be downloaded at startup or after certain cloud-delivered protection events. |
Manage updates for mobile devices and virtual machines (VMs) | You can specify settings, such as whether updates should occur on battery power that 's especially useful for mobile devices and virtual machines. |
Microsoft Defender for Endpoint update for EDR Sensor | You can update the EDR sensor (MsSense.exe) that's included in the new Microsoft Defender for Endpoint unified solution package released in 2021. |
Tip
If you're looking for Antivirus related information for other platforms, see:
- Set preferences for Microsoft Defender for Endpoint on macOS
- Microsoft Defender for Endpoint on Mac
- macOS Antivirus policy settings for Microsoft Defender Antivirus for Intune
- Set preferences for Microsoft Defender for Endpoint on Linux
- Microsoft Defender for Endpoint on Linux
- Configure Defender for Endpoint on Android features
- Configure Microsoft Defender for Endpoint on iOS features
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