Microsoft releases new Defender update for Windows 11, 10, and Server install images

Microsoft has released a new Microsoft Defender update package for Windows 11, Windows 10, and Windows Server installation images. This follows a similar update for Lumma last month and helps address outdated Defender components that come bundled with installation media.

When setting up a new system, the anti-malware tools included in the image can be weeks or months out of date, creating a temporary security risk.

Microsoft’s updated Defender package aims to close that gap by delivering the latest definitions and software components directly into install images.

What’s in the update

• Defender package version: 1.431.54.0
• Platform version: 4.18.25050.5
• Engine version: 1.1.25050.2
• Security intelligence version: 1.431.54.0

It applies to the following platforms:

• Windows 11
• Windows 10 (Home, Pro, Enterprise)
• Windows Server 2022
• Windows Server 2019
• Windows Server 2016

According to Microsoft’s documentation, the update enhances detection capabilities for a range of threats, including trojans and backdoor exploits.

While the current version of Microsoft Defender’s intelligence update is 1.431.155.0, this image-specific package is designed for new installs only. Besides patching early vulnerabilities, Microsoft notes that these updates can also improve performance on some systems after setup.