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Update manage-updates-baselines-windows-defender-antivirus.md
revision of the doc + supportability statement
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Kurt Sarens
@ -1,6 +1,6 @@
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---
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title: Manage Windows Defender Antivirus updates and apply baselines
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description: Manage how Windows Defender Antivirus receives protection and product updates.
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title: Manage Microsoft Defender Antivirus updates and apply baselines
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description: Manage how Microsoft Defender Antivirus receives protection and product updates.
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keywords: updates, security baselines, protection, schedule updates, force updates, mobile updates, wsus
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search.product: eADQiWindows 10XVcnh
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ms.pagetype: security
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@ -17,7 +17,7 @@ ms.reviewer:
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manager: dansimp
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---
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# Manage Windows Defender Antivirus updates and apply baselines
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# Manage Microsoft Defender Antivirus updates and apply baselines
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**Applies to:**
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@ -25,16 +25,16 @@ manager: dansimp
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There are two types of updates related to keeping Windows Defender Antivirus up to date:
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1. Protection updates
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1. Security intelligence updates
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2. Product updates
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You can also apply [Windows security baselines](https://technet.microsoft.com/itpro/windows/keep-secure/windows-security-baselines) to quickly bring your endpoints up to a uniform level of protection.
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## Protection updates
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Windows Defender Antivirus uses both [cloud-delivered protection](utilize-microsoft-cloud-protection-windows-defender-antivirus.md) (also called the Microsoft Advanced Protection Service or MAPS) and periodically downloaded protection updates to provide protection. These protection updates are also known as Security intelligence updates.
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## Security intelligence updates
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The cloud-delivered protection is always on and requires an active connection to the Internet to function, while the protection updates generally occur once a day (although this can be configured). See the [Utilize Microsoft cloud-provided protection in Windows Defender Antivirus](utilize-microsoft-cloud-protection-windows-defender-antivirus.md) topic for more details about enabling and configuring cloud-provided protection.
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Microsoft Defender Antivirus uses [cloud-delivered protection](utilize-microsoft-cloud-protection-windows-defender-antivirus.md) (also called the Microsoft Advanced Protection Service or MAPS) and periodically downloads Security intelligence updates to provide protection.
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The cloud-delivered protection is always on and requires an active connection to the Internet to function, while the Security intelligence updates occur on a scheduled cadence (configurable via policy). See the [Utilize Microsoft cloud-provided protection in Windows Defender Antivirus](utilize-microsoft-cloud-protection-windows-defender-antivirus.md) topic for more details about enabling and configuring cloud-provided protection.
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Engine updates are included with the Security intelligence updates and are released on a monthly cadence.
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@ -46,59 +46,183 @@ You can manage the distribution of updates through Windows Server Update Service
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## Released platform and engine versions
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Only the main version is listed in the following table as reference information:
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### Monthly platform and engine releases
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For information how to update or how to install the platform update, please see: [Update for Windows Defender antimalware platform](https://support.microsoft.com/en-us/help/4052623/update-for-windows-defender-antimalware-platform)
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<details>
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<summary> March-2020 (4.18.2003.8/1.1.16900.2)</summary>
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<summary> April-2020 (Platform: 4.18.2004.5 | Engine: 1.1.17000.2)</summary>
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Security intelligence update version: **TBD**
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Released: **April 30, 2020**
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Platform: **4.18.2004.5**
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Engine: **1.1.17000.2**
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Support phase: **Security and Critical Updates**
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Released: **March 26, 2020**
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Platform/Client: **4.18.2003.8**
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Engine: **1.1.16900.2**
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### What´s new
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* fix1
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* fix2
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* fix3
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### Known Issues
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* New file path
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Because of a change in the file path location in the update, many downloads are blocked when AppLocker is enabled.
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To work around this issue, open Group Policy, and then change the setting to Allow for the following path:
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### What's new
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:::row:::
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:::column:::
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**Platform**
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* fix1
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* fix2
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%OSDrive%\ProgramData\Microsoft\Windows Defender\Platform\*
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> [!NOTE]
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> Information the user should notice even if skimming.
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:::column-end:::
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:::column:::
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**Engine**
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* fix1
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* fix2
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:::column-end:::
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:::row-end:::
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### Known Issues
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No known issues
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</details>
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<details>
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<summary> Jan-2020 (4.18.2001.10/1.1.16700.2)</summary>
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<summary> March-2020 (Platform: 4.18.2003.8 | Engine: 1.1.16900.2)</summary>
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Security intelligence update version: **1.313.8.0**
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Released: **March 24, 2020**
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Platform: **4.18.2003.8**
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Engine: **1.1.16900.4**
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Support phase: **Technical upgrade Support (Only)**
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### What's new
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:::row:::
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:::column:::
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**Platform**
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* fix1
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* fix2
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:::column-end:::
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:::column:::
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**Engine**
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* fix1
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* fix2
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:::column-end:::
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:::row-end:::
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### Known Issues
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No known issues
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</details>
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<details>
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<summary> February-2020 (Platform: - | Engine: 1.1.16800.2)</summary>
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Security intelligence update version: **1.311.4.0**
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Released: **February 25, 2020**
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Platform/Client: **-**
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Engine: **1.1.16800.2**
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Support phase: **N/A**
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### What's new
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:::row:::
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:::column:::
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**Platform**
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* fix1
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* fix2
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:::column-end:::
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:::column:::
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**Engine**
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* fix1
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* fix2
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:::column-end:::
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:::row-end:::
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### Known Issues
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No known issues
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</details>
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<details>
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<summary> January-2020 (Platform: 4.18.2001.10 | Engine: 1.1.16700.2)</summary>
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Released: **March 26, 2020**
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Security intelligence update version: **1.309.32.0**
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Released: **January 30, 2020**
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Platform/Client: **4.18.2001.10**
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Engine: **1.1.16700.2**
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### What´s new
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* fix1
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* fix2
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* fix3
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### Known Issues
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* New file path
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Because of a change in the file path location in the update, many downloads are blocked when AppLocker is enabled.
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To work around this issue, open Group Policy, and then change the setting to Allow for the following path:
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Engine: **1.1.16700.2**
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Support phase: **Technical upgrade Support (Only)**
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### What's new
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%OSDrive%\ProgramData\Microsoft\Windows Defender\Platform\*
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:::row:::
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:::column:::
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**Platform**
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* fix1
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* fix2
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:::column-end:::
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:::column:::
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**Engine**
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* fix1
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* fix2
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:::column-end:::
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:::row-end:::
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### Known Issues
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No known issues
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</details>
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<details>
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<summary> November-2019 (Platform: 4.18.1911.2 | Engine: 1.1.16600.7)</summary>
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Security intelligence update version: **1.307.13.0**
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Released: **December 7, 2019**
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Platform: **4.18.1911.2**
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Engine: **1.1.17000.7**
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Support phase: **No support**
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### What's new
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:::row:::
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:::column:::
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**Platform**
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* fix1
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* fix2
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:::column-end:::
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:::column:::
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**Engine**
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* fix1
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* fix2
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:::column-end:::
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:::row-end:::
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### Known Issues
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No known issues
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</details>
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## Windows Defender Antivirus platform support
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As stated above, platform and engine updates are provided on a monthly cadence.
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Customers must stay current with the latest platform update to be fully supported. Our support structure is now dynamic, evolving into two phases depending on the availability of the latest platform version.
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* **Security and Critical Updates servicing phase** - When running the latest platform version, you will be eligible to receive both Security and Critical updates to the anti-malware platform.
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* **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.*
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*Technical support will continue to be provided for upgrades from the Windows 10 release version (see [Platform version included with Windows 10 releases](#platform-version-included-with-windows-10-releases)) to the latest platform version.
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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(*).
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### Platform version included with Windows 10 releases
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The below table provides the Windows Defender Antivirus platform and engine versions that are shipped with the latest Windows 10 releases:
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|Windows 10 release |Platform version |Engine version |Support phase |
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|1909 (19H2) |4.18.1902.5 |1.1.16700.3 | Technical upgrade Support (Only)
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|1903 (19H1) |4.18.1902.5 |1.1.15600.4 | Technical upgrade Support (Only)
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|1809 (RS5) |4.18.1807.18075 |1.1.15000.2 | Technical upgrade Support (Only)
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|1803 (RS4) |4.13.17134.1 |1.1.14600.4 | Technical upgrade Support (Only)
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|1709 (RS3) |4.12.16299.15 |1.1.14104.0 | Technical upgrade Support (Only)
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|1703 (RS2) |4.11.15603.2 |1.1.13504.0 | Technical upgrade Support (Only)
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|1607 (RS1) |4.10.14393.3683 |1.1.12805.0 | Technical upgrade Support (Only)
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Windows 10 release info: [Windows lifecycle fact sheet](https://support.microsoft.com/en-us/help/13853/windows-lifecycle-fact-sheet)
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## In this section
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