Update for Microsoft Defender antimalware platform

Summary

This article describes an antimalware platform update package for Microsoft Defender for the following operating systems:

Windows 10 (Enterprise, Pro, and Home editions)

Windows Server 2019

Windows Server 2016

Version information

Note: 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. See Manage Windows Defender Antivirus updates and apply baselines for details.

This update changes the antimalware client version.

New version: 4.18.2103.7

Note Version 4.18.2001.10 is re-released to prevent supersedence. For more information, see Manage Windows Defender Antivirus updates and apply baselines.

How to find the client version information

Windows 10, version 1709 and later versions

Open the Microsoft Defender Security Center app, select the Settings icon, and then select About. The version number is listed under Antimalware Client Version.

Windows 10, version 1607, version 1703, and later versions

Open the Microsoft Defender app, select Help, and then select About. The version number is listed under Antimalware Client Version.

Package information

The package name is listed as Update for Microsoft Defender antimalware platform. The package size is approximately 2–3 MB.

Known issues in this update

Because of a change in the file path location in the update, many downloads are blocked when AppLocker is enabled.

To work around this issue, open Group Policy, and then change the setting to Allow for the following path:

Update information

This package includes monthly updates and fixes to the Microsoft Defender antimalware platform that is used by Microsoft Defender Antivirus in Windows 10.

Monthly updates are installed in addition to major Windows 10 releases. Both types of updates should be installed to ensure continued protection against malware and other threats.

For more information about the product versions and about how the updates work and how you can configure and manage them, see the Manage Windows Defender Antivirus updates and apply baselines topic.

File location changes

This update makes the following binary location changes.

Windows Defender Antivirus service (MsMpEng.exe)

Network Realtime Inspection service (NisSrv.exe)

Windows Defender Antivirus drivers

All third-party applications that have references to these binaries must be updated to the new locations.

How to obtain this update

This update is available from Microsoft Update and WSUS.

Restart requirement

You do not have to restart the system after you install this update.

Note Platform update 4.18.2001.10 might require a restart.

How to roll back this update

To roll back this update, use the appropriate method:

To roll back this update to the previous version, run the following command:

«%programdata%\microsoft\windows defender\platform\ \mpcmdrun.exe» -revertplatform

To roll back this update to the Inbox CAMP version, run the following command:

«%programfiles%\Windows Defender\MpCmdRun.exe» -resetplatform

References

Learn about the terminology that Microsoft uses to describe software updates.

Third-party information disclaimer

The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, about the performance or reliability of these products.

Security intelligence updates for Microsoft Defender Antivirus and other Microsoft antimalware

Microsoft continually updates security intelligence in antimalware products to cover the latest threats and to constantly tweak detection logic, enhancing the ability of Microsoft Defender Antivirus and other Microsoft antimalware solutions to accurately identify threats. This security intelligence works directly with cloud-based protection to deliver fast and powerful AI-enhanced, next-generation protection.

Microsoft security intelligence updates include software that incorporates material from third parties. Third-party notices and information

Automatic updates

To help ensure your antimalware solution detects the latest threats, get updates automatically as part of Windows Update. If you are having problems with Windows Update, use the troubleshooter.

If you don’t already use Microsoft Defender Antivirus, learn how to turn it on.

Trigger an update

A manually triggered update immediately downloads and applies the latest security intelligence. This process might also address problems with automatic updates. Microsoft Defender Antivirus and other Microsoft antimalware solutions provide a way to manually trigger an update.

In Windows 10, select Check for updates in the Windows Security Virus & threat protection screen to check for the latest updates.

Enterprise administrators can also push updates to devices in their network. To clear the current cache and trigger an update, use a batch script that runs the following commands as an administrator:

Manually download the update

You can manually download the latest update.

Latest security intelligence update

The latest security intelligence update is:

• Version: 1.335.1135.0
• Engine Version: 1.1.18000.5
• Platform Version: 4.18.2103.7
• Released: 4/18/2021 12:28:05 PM
• Documentation: Release notes

You need to download different security intelligence files for different products and platforms. Select the version that matches your Windows operating system or the environment where you will apply the update.

Note: Starting on Monday October 21, 2019, the Security intelligence update packages will be SHA2 signed.
Please make sure you have the necessary update installed to support SHA2 signing, see 2019 SHA-2 Code Signing Support requirement for Windows and WSUS.

Antimalware solution	Definition version
Microsoft Defender Antivirus for Windows 10 and Windows 8.1	32-bit | 64-bit | ARM
Microsoft Security Essentials	32-bit | 64-bit
Windows Defender in Windows 7 and Windows Vista	32-bit | 64-bit
Microsoft Diagnostics and Recovery Toolset (DaRT)	32-bit | 64-bit
System Center 2012 Configuration Manager	32-bit | 64-bit
System Center 2012 Endpoint Protection	32-bit | 64-bit
Windows Intune	32-bit | 64-bit

The links point to an executable file named mpam-fe.exe , mpam-feX64.exe , or mpas-fe.exe (used by older antispyware solutions). Simply launch the file to manually install the latest security intelligence.

End of life for Microsoft Forefront Client Security was on July 14, 2015. Customers are encouraged to migrate to System Center Endpoint Protection. For more information, visit the Microsoft support lifecycle website.

Network Inspection System updates

The following products leverage Network Inspection System (NIS) updates:

• Microsoft Security Essentials
• Forefront Endpoint Protection
• System Center 2012 Endpoint Protection

These updates are designed to protect you from network threats, including exploits as they are transmitted. Check the version of the Antimalware Client component on your security software and download the right version of the NIS updates for your platform.

Windows Defender Definitions

Windows Defender Definition Updates is a crucial security addon that enables the core antivirus service running on all modern versions of Windows OS to get access to the latest antivirus definition and gain the ability to detect, quarantine, and erase a wide array of software threats on desktop and laptop PCs.

Top Downloads

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Each software is released under license type that can be found on program pages as well as on search or category pages. Here are the most common license types:

Freeware

Freeware programs can be downloaded used free of charge and without any time limitations. Freeware products can be used free of charge for both personal and professional (commercial use).

Open Source

Open Source software is software with source code that anyone can inspect, modify or enhance. Programs released under this license can be used at no cost for both personal and commercial purposes. There are many different open source licenses but they all must comply with the Open Source Definition — in brief: the software can be freely used, modified and shared.

Free to Play

This license is commonly used for video games and it allows users to download and play the game for free. Basically, a product is offered Free to Play (Freemium) and the user can decide if he wants to pay the money (Premium) for additional features, services, virtual or physical goods that expand the functionality of the game. In some cases, ads may be show to the users.

Demo programs have a limited functionality for free, but charge for an advanced set of features or for the removal of advertisements from the program’s interfaces. In some cases, all the functionality is disabled until the license is purchased. Demos are usually not time-limited (like Trial software) but the functionality is limited.

Trial

Trial software allows the user to evaluate the software for a limited amount of time. After that trial period (usually 15 to 90 days) the user can decide whether to buy the software or not. Even though, most trial software products are only time-limited some also have feature limitations.

Usually commercial software or games are produced for sale or to serve a commercial purpose.

CAN’T UPDATE WINDOWS DEFENDER VIRUS DEFINITIONS .

Please follow the troubleshooting methods given below and let’s know the results.

Method 1: Run the Windows Update Troubleshooter

This troubleshooter is an automated Windows 8 inbuilt tool which finds and fixes the common issues with the “Windows Update” settings. Perform these steps to run this tool and check if that helps.

a) Press “Windows Logo” + “W” keys from the keyboard.

b) Type “Troubleshooting” in the search bar and press “Enter”.

c) In the “Troubleshooting” window, click on “View All” on the left pane.

d) Click on “Windows Update”.

e) Click on “Advanced” and then click on “Run as Administrator”.

f) Click “Next” and follow the on-screen instructions to complete the troubleshooting process.

Please check the troubleshooting report and let’s know the details. You may also try the suggestions given by the troubleshooter and check if that resolves the issue. If that doesn’t help, then try the next method.

You may manually download and install the latest definition updates for Windows Defender.

Method 2: How to manually download the latest definition updates for Windows Defender

To manually download and install the latest definition updates for Windows Defender, please refer to the article given below:

Обновление для платформы Microsoft Defender по антивирусной платформе

Аннотация

В этой статье описан пакет обновления платформы для защиты от антивирусной программы для Microsoft Defender для следующих операционных систем:

Windows 10 (корпоративные, профессиональные и домашние выпуски)

Windows Server 2019

Windows Server 2016

Сведения о версии

Примечание: После выпуска новой версии платформы поддержка более старых версий (N-2) будет снижена только до технической поддержки. Версии платформы, более старые, чем N-2, больше не будут поддерживаться. Подробные сведения см. Защитник Windows управления обновлениями антивирусной программы и применение базовых показателей.

Это обновление изменяет версию клиента антивирусной программы.

Новая версия: 4.18.2103.7

Примечание. Версия 4.18.2001.10 повторно выпущена для предотвращения суперсериента. Дополнительные сведения см. в Защитник Windows и применение базовых показателей.

Как найти сведения о версии клиента

Windows 10 версии 1709 и более поздних версий

Откройте приложение Центра безопасности Microsoft Defender, выберите значок «Параметры» и выберите «О приложении». Номер версии указан в списке под версией клиента antimalware.

Windows 10, версия 1607, версия 1703 и более поздние версии

Откройте приложение Microsoft Defender, выберите «Справка»,а затем выберите «О приложении». Номер версии указан в списке под версией клиента antimalware.

Сведения о пакете

Имя пакета указано в списке «Обновление для платформы антивирусного ПО в Защитнике Майкрософт». Размер пакета составляет около 2–3 МБ.

Известные проблемы в этом обновлении

Новый путь к файлу

Из-за изменения пути к файлу в обновлении многие загрузки блокируются, если включено приложение AppLocker.

Чтобы обойти эту проблему, откройте групповую политику и измените параметр «Разрешить» для следующего пути:

Сведения об обновлении

Этот пакет содержит ежемесячные обновления и исправления для антивирусной платформы Microsoft Defender, которая используется антивирусной программой «Защитник Майкрософт» в Windows 10.

В дополнение к основным выпускам Windows 10 устанавливаются ежемесячные обновления. Оба типа обновлений должны быть установлены для обеспечения дальнейшей защиты от вредоносных программ и других угроз.

Дополнительные сведения о версиях продуктов и о работе обновлений, а также о настройке и управлении ими см. в разделе «Управление обновлениями Защитник Windows антивирусной программы и применение базовых показателей».

Изменение расположения файла

Это обновление вносит следующие изменения в двоичное расположение:

Защитник Windows антивирусной службы (MsMpEng.exe)

Служба проверки реального времени (NisSrv.exe)

Защитник Windows антивирусных драйверов

Все сторонние приложения, которые содержат ссылки на эти данные, должны быть обновлены в новых местах.

Получение обновления

Это обновление доступно в Обновлениях Майкрософт и WSUS.

Требование перезагрузки

После установки этого обновления перезагружать систему не нужно.

Примечание. Для обновления платформы 4.18.2001.10 может потребоваться перезапуск.

Как откатить это обновление

Чтобы откатить это обновление, используйте соответствующий способ:

Чтобы откатить это обновление до предыдущей версии, запустите следующую команду:

«%programdata%\microsoft\windows defender\platform\ \mpcmdrun.exe» -revertplatform

Чтобы откатить это обновление до версии CAMP для входящих сообщений, запустите следующую команду:

«%programfiles%\Windows Defender\MpCmdRun.exe» -resetplatform

Ссылки

Узнайте о терминологии, используемой Майкрософт для описания обновлений программного обеспечения.

Заявление об отказе от ответственности за сведения о продуктах сторонних производителей

В этой статье упомянуты программные продукты независимых производителей. Корпорация Майкрософт не дает никаких гарантий, подразумеваемых и прочих, относительно производительности и надежности этих продуктов.