bga68 (bga68) wrote,

Definition updates for Windows Defender Antivirus

Definition updates for Windows Defender Antivirus and other Microsoft antimalware

Microsoft Malware Protection Center (MMPC) is now Windows Defender Security Intelligence (WDSI).
Watch out for even more info about threats and protecting you and your Windows computer.

Manually download and install the definitions

You can manually download the latest definitions or pre-release definitions.

Latest definitions

The latest antimalware definitions file is as follows:

  • Version: 1.247.949.0

  • Released: Jul 16,2017 10:08 AM UTC

  • Documentation: Release notes

You need to download different definition files for different products and platforms. Select the version that matches the environment where you will use the definitions.

Windows 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
Forefront Server Security 32-bit | 64-bit
Forefront Endpoint Protection 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 definitions.

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
Older than 4.1.522.0 Network Inspection definitions 32-bit | 64-bit

Tags: defender, security, update, virus, windows, антивирус, информационная безопасность

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