Security Intelligence Update for Microsoft Defender Antivirus - KB2267602 (Version 1.333.1331.0)


The latest Microsoft Security Intelligence Update for Microsoft Defender Antivirus - KB2267602 (Version 1.333.1331.0) is released on 26-03-2021. You can find more details about this update here.

Also, today Microsoft has released Security Intelligence Update for Microsoft Defender Antivirus - KB2267602 (Version 1.333.1320.0)

Microsoft frequently updates security intelligence in its 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.

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: 1.333.1315.0
  • Engine Version: 1.1.17900.7
  • Platform Version: 4.18.2102.4
  • Released: 3/26/2021 7:39:24 AM
  • 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.

Antimalware solution Definition version
Microsoft Defender Antivirus for Windows 10 and Windows 8.132-bit | 64-bit | ARM
Microsoft Security Essentials32-bit | 64-bit
Windows Defender in Windows 7 and Windows Vista32-bit | 64-bit
Microsoft Diagnostics and Recovery Toolset (DaRT)32-bit | 64-bit
System Center 2012 Configuration Manager32-bit | 64-bit
System Center 2012 Endpoint Protection32-bit | 64-bit
Windows Intune32-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.


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