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:
cd %ProgramFiles%\Windows Defender MpCmdRun.exe -removedefinitions -dynamicsignatures MpCmdRun.exe -SignatureUpdate
Manually download the update
You can manually download the latest update.
Latest security intelligence update
The latest security intelligence update is:
- Version: 1.427.775.0
- Engine Version: 1.1.25030.1
- Platform Version: 4.18.25030.2
- Released: 5/13/2025 5:11:21 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.
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.
| 4.1.522.0 and newer | Network Real-time Inspection definitions | 32-bit | 64-bit |
Здравствуйте админ! После того, как я обновил на своём ноутбуке Windows 8.1 до Windows 10, десятка стала активно обновляться и после каждого выключения ноутбука выходит сообщение «Работа с обновлениями. Завершено 100%. Не выключайте компьютер» и ноутбук не выключается довольно долго, мне это надоело и я отключил обновления Windows по вашей статье. Всё бы хорошо, но в качестве антивирусной программы я использую Защитник Windows (Windows Defender), а его антивирусные базы обновляются через Центр обновления Windows, который я отключил, а это значит, что антивирусные базы встроенного в Win 10 антивируса не получают обновлений. Скажите, как можно вручную обновить Защитник Windows? Можно где-то отдельно скачать файлы обновлений для Защитника Windows для операционных систем Windows 7, Windows 8.1 и Windows 10?
Как вручную (автономно) обновить встроенный в Windows 10 антивирус Windows Defender (Защитник Windows)
Привет друзья! Все мы знаем, что встроенный в Windows 10 бесплатный антивирус Windows Defender защищает нашу операционную систему от различных вредоносных программ и получает обновления вирусных сигнатур каждый день через Центр обновлений Windows.
Если вы отключили обновления в Windows 10, то это значит, что встроенный в операционную систему антивирус Windows Defender также не будет обновляться. Поэтому имеет большое значение, держать Центр обновления Windows включенным, чтобы Защитник Windows получал обновления своевременно.
Если вы по каким-либо причинам отключили обновления Windows, то обновить Windows Defender можно вручную (автономно), в сегодняшней статье я покажу вам, как это можно сделать.
В параметрах Windows выбираем «Обновление и безопасность»,
затем «Защитник Windows» и смотрим версию подсистемы, а также определения антивирусной программы и определения антишпионской программы. После ручного обновления версии должны измениться.
Щёлкаем левой мышью на кнопке «Поиск Windows»
и набираем «Защитник Windows», затем жмём на появившееся приложение «Защитник Windows»,
появляется окно антивируса Windows Defender. Видим, что определения вирусов и программ-шпионов очень старые.
Жмём на кнопку «Обновить».
Жмём на кнопку «Обновление определений».
Происходит обновление антивирусных баз Защитника Windows.
Антивирус обновлён.
Версия подсистемы, а так же определения антивирусной программы и определения антишпионской программы изменились.
В процессе обновления у вас может выйти ошибка — «Не удалось обновить определения вирусов и программ шпионов».
В этом случае перейдите по ссылке на официальный сайт Майкрософт
https://www.microsoft.com/en-us/wdsi/definitions
Обновление защиты от вредоносных программ и программ-шпионов программное обеспечение Microsoft.
Ведём шкалу прокрутки вниз до слов…
Обновления для защиты от вредоносных программ и программ-шпионов.
Выбираем версию установленной на нашем компьютере операционной системы и её разрядность. В моём случае, это Windows 10-64 бит.
Мне на компьютер скачивается файл mpam-fe.exe с обновлениями вирусных сигнатур для Защитника Windows размером 120 Мб. Запускаю данный файл от администратора.
Программа не открывает никакого окна. Windows Defender обновляется за несколько минут. Теперь в параметрах Windows выберите «Обновление и безопасность», затем «Защитник Windows» и смотрите версию подсистемы, а также определения антивирусной программы и определения антишпионской программы. После ручного обновления версии должны измениться.
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Home » Windows 10 » How To Manually Update Windows Defender Offline In Windows 10/8.1
The Windows Defender program in Windows 8 and Windows 10 versions of Windows helps you protect your data from viruses, malware and various other threats. As you likely know, the Defender in Windows 10/8 is nothing but a cut-down version of Microsoft Security Essentials.
With default settings, Windows Defender in Windows 10 and Windows 8.1 downloads and installs required updates once a day and doesn’t require manual intervention. That is, Defender automatically checks for update and downloads updates, if available. But if your PC isn’t connected to the internet or for some other reason you want to manually install updates, you can do so by following the given below instructions.
This guide is based on our previously published how to manually download Microsoft Security Essentials update guide.
Manually download and install Windows Defender updates in Windows 10/8.1
Step 1: Check the version (32 or 64-bit) of Windows 10/8.1 installed on your PC. To do so, you can open Computer Properties by right-clicking on the computer icon on the desktop and then clicking Properties.
And if you can’t find Computer icon on the desktop, follow the instructions in our how to add Computer icon to desktop guide.
Step 2: Next, visit the following links to download latest updates for Windows Defender.
Updates for 32-bit (x86)
Updates for 64-bit (x64)
Be sure to download the right version of the update as updates released for 32-bit can’t be installed on 64-bit PC and vice versa.
Step 3: Once the update file downloaded, navigate to the download folder containing the update and double-click on the same to install the same. That’s it!
How to remove Scan with Windows Defender from context menu an how to disable Windows Defender permanently in Windows 10 guide might also interest you.
Manually Update Windows Defender – Now Most of the Windows users have Windows 10 or Windows 8.1 on their computers cause these are the default operating system in latest laptops, computers and on the other hand Windows 7 and Windows XP’s Support ended. For windows users, Antivirus is one of the most important software tool cause windows is easily infected by various types of viruses such as adware, spyware, and malware.
When they see that antivirus is one of the most important concerns for windows users so they add the new tool in their latest windows operating system known as Windows Defender work as same as other antivirus and recommended by Microsoft Windows.Sometimes install latest updates will Speed up your Computer Processing. When we install windows 10/8.1 it automatically installs the latest version of Windows Defender If you are connected to the internet. Otherwise, It installs only the default version of windows defender that comes with that windows package.
- Related- Hack DNS For Faster Internet Speed!
In this post, we show how you can manually update your Windows Defender or Security essentials antivirus easily with few simple steps. To see your antivirus in full working condition and have latest updated definitions you definitely need to update your windows defender antivirus in windows. There are other ways to download Windows defender antivirus but we demonstrate the best ay to manually update your windows antivirus. Basically, we show you how you can download this update in offline and save offline as you can manually update.
Table of Contents
What is Windows Defender or Security Essentials?
Windows Defender or Security Essentials is inbuilt antivirus by Microsoft that came in windows operating system So you don’t need to install any third party antivirus tool. But many of users still use third-party antivirus tools in their opinions. Windows defender can help users to choose which software is helpful and which is spam tool or malware for an operating system.
Many of you guys confuse between Windows Defender or Security Essentials So let me tell you Security Essentials is also the previous version of windows defender came into windows 8 operating system and soon they find out bugs and all so they change their name and features too and released in their new operating stem windows 8.1 and further windows 10 also. Now when you install Windows 8.1 or windows 10 so this will be your default antivirus in windows. If you want to change or disable it you can easily do that.
Why We need to Update Windows Defender:
There are million of hacking and cracking attempt performed by the hacker on windows, websites and social media. So there are new types of techniques used by hackers that many of antivirus didn’t aware about so if you want you will be safe from almost all these kind of attacks or spam you definitely need the latest version of antivirus. I which they update their virus definitions so your antivirus can detect the latest kind of hacking tactics and techniques used by hackers.
- In first you need to check that what is your Windows bit architecture like It is 32 bit or 64 bit. After knowing that you should download your bit compatible update files from official Microsoft’s server. (If You don’t know how to check Which bit architecture your operating system running on just Right click on “This PC” and open properties and check your system type.)
- Go to these official websites links where they provide Microsoft’s Windows defender antivirus update file So you can manually download the update file and install it on your computer as latest update.
Updates File for 32-bit (x86)
&
Updates File for 64-bit (x64) - We would recommend you that check bit architecture or system type of your computer and then accordingly download the right version of your antivirus. Cause 32 bit can’t be installed on 64 bit and 64 bit can’t be installed on 32 bit.
- After downloading just locate download folder and open the update file your downloaded from above links and install the update it will overwrite the windows defender files and install the latest version on your system
From Editor’s Desk:
In above article, we show you guys how you can manually download windows defender file and download in your windows operating system as offline. We provide both files of the update antivirus by windows. But you need to download it accordingly your windows architecture.
If you stuck any kind of problem like you are not able to install this tool or not able to update windows defender antivirus so please leave the comment below. We will solve your problem as soon as possible.