Windows 10: Multiple Microsoft Defender Platform Versions Installed

Hello, I’ve noticed an unusual setup on my system. It seems I have two platform versions of Microsoft Defender installed: 4.18.25010.11-0 and 4.18.24090.11-0 Additionally, I’ve found a less complex installation of Defender in the Program Files directory. However, all the files in the Program Files location show a "last modified" date from before the year 2024. I have just done the update-MPSignature command. All active processes for Defender appear to be running from a single directory within the ProgramData folder, specifically related to the version 4.18.25010.11-0 The multiple folders and v

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Microsoft Defender update for Windows OS installation images

• Defender package version: 20230604.1

This package updates the anti-malware client, anti-malware engine, and signature versions in the OS installation images to following versions:

• Platform version: 4.18.23050.3
• Engine version: 1.1.23050.3
• Security intelligence version: 1.391.476.0

Package information The package size is approximately:

• ARM64: 74 MB
• X86: 126 MB
• X64: 129 MB

Known issues in this update None Update information This package includes monthly updates and fixes to the Microsoft Defender antimalware platform and engine that is used by Microsoft Defender Antivirus in Windows 11. This package should be applied offline on Windows Images/VHD(x) file. Learn more about the package contents here: Manage Microsoft Defender Antivirus updates and apply baselines | Microsoft Learn This package also includes the latest security intelligence update that is available up to the date of release. Learn more about security intelligence updates including the release notes here. How to obtain this update Different update packages are required for different Windows OS image architectures. Select the architecture that matches the installation image to which you will apply this update: Microsoft Defender update for Windows Operating system installation image: 32-bit | 64-bit | ARM64

Note These links point to defender-update-kit-[x86|x64|arm].zip. Extract this .zip file to get the Defender update package (defender-dism-[x86|x64|arm].cab) and an update patching tool (DefenderUpdateWinimage.ps1) that assists the update operation for OS installation images. Package update tool The following prerequisites apply to running this patching tool (DefenderUpdateWinImage.ps1):

• You must be running a 64-bit Windows 10 or later OS environment that includes PowerShell 5.1 or a later version.
• The Microsoft.Powershell.Security and DISM modules must be installed.
• You must start PowerShell on the device by using administrator privileges.

Note

• Do not use this package to update live images because it can damage the Windows installation that Is running inside the Virtual Machine.
• The DefenderUpdateWinImage.ps1 tool provides an option to remove the update. However, you may still want to keep a backup copy of images before you apply the update.

How to apply this update PS C:\> DefenderUpdateWinImage.ps1 -WorkingDirectory <path> -Action AddUpdate -ImagePath <path_ts_Image> -Package How to remove or roll back this update PS C:\> DefenderUpdateWinImage.ps1 -WorkingDirectory <path> -Action RemoveUpdate -ImagePath <path_ts_Image> How to list the details of installed update PS C:\> DefenderUpdateWinImage.ps1 -WorkingDirectory <path> -Action ShowUpdate -ImagePath <path_ts_Image> References Learn about the terminology that Microsoft uses to describe software updates. Source: https://support.microsoft.com/en-us/...2-2d1f3865450d

 

Microsoft Defender update for Windows OS installation images

• Defender package version: 20230503.1

This package updates the anti-malware client, anti-malware engine, and signature versions in the OS installation images to following versions:

• Platform version: 4.18.2304.8
• Engine version: 1.1.20300.3
• Security intelligence version: 1.389.44.0

Package information The package size is approximately:

• ARM64: 69 MB
• X86: 113 MB
• X64: 116 MB

Known issues in this update None Update information This package includes monthly updates and fixes to the Microsoft Defender antimalware platform and engine that is used by Microsoft Defender Antivirus in Windows 11. This package should be applied offline on Windows Images/VHD(x) file. Learn more about the package contents here: Manage Microsoft Defender Antivirus updates and apply baselines | Microsoft Learn This package also includes the latest security intelligence update that is available up to the date of release. Learn more about security intelligence updates including the release notes here. How to obtain this update Different update packages are required for different Windows OS image architectures. Select the architecture that matches the installation image to which you will apply this update: Microsoft Defender update for Windows Operating system installation image: 32-bit | 64-bit | ARM64 Note: These links point to defender-update-kit-[x86|x64|arm].zip. Extract this .zip file to get the Defender update package (defender-dism-[x86|x64|arm].cab) and an update patching tool (DefenderUpdateWinimage.ps1) that assists the update operation for OS installation images. Package update tool The following prerequisites apply to running this patching tool (DefenderUpdateWinImage.ps1):

• You must be running a 64-bit Windows 10 or later OS environment that includes PowerShell 5.1 or a later version.
• The Microsoft.Powershell.Security and DISM modules must be installed.
• You must start PowerShell on the device by using administrator privileges.

Note

• Do not use this package to update live images because it can damage the Windows installation that Is running inside the Virtual Machine.
• The DefenderUpdateWinImage.ps1 tool provides an option to remove the update. However, you may still want to keep a backup copy of images before you apply the update.

How to apply this update PS C:\> DefenderUpdateWinImage.ps1 -WorkingDirectory <path> -Action AddUpdate -ImagePath <path_ts_Image> -Package How to remove or roll back this update PS C:\> DefenderUpdateWinImage.ps1 -WorkingDirectory <path> -Action RemoveUpdate -ImagePath <path_ts_Image> How to list the details of installed update PS C:\> DefenderUpdateWinImage.ps1 -WorkingDirectory <path> -Action ShowUpdate -ImagePath <path_ts_Image> References Learn about the terminology that Microsoft uses to describe software updates. Source: https://support.microsoft.com/en-us/...2-2d1f3865450d

 

Microsoft Defender update for Windows installation images

Source: https://support.microsoft.com/en-us/...2-2d1f3865450d