Microsoft Defender Anti-Malware/Platform Update Kit for Windows 10 and 11 (Updated: December 19th, 2025)

[steven4554]

Merry Christmas and a Happy New Year to everyone here on MSFN

I will be back making the first defender cabs of the year on January 6th 2026!

For Integration into offline Windows 11/10 images only, not to be installed on a Running/functioning Windows 11/10 OS!

I will provide updated defender cabs on the 1st, 2nd, 3rd and 4th week of the same month, always on a Tuesday. Updates will be available from this first post only.

Credit goes to members on My Digital Life Forum:-

abbodi1406 for signature blocks in the Windows Defender Integration Tool script. And for providing direct download links for the beta platform updates.

Enthousiast for pointing out the missing files, letting me know about new platform updates and for testing the new defender cabs. 

AveYo for creating a verification tool that checks the digital signatures of files inside the cabs, to make sure they are valid and not tampered with. This script has been updated to support arm64.

drew84, Stripakulina and Enthousiast For providing direct download links for the x64 beta platform updates.

atplsx for providing the direct download links to pre-release platform updates.

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To integrate the updated Platform and Anti-Malware definitions into your Windows 10/11 offline images, you can use the tools below:-

1. Windows NT 10.0 Updates Installer v10.58z - Tool created and maintained by abbodi1406

2. UUP to ISO Converter v120z - Tool created and maintained by abbodi1406

3. Defender files Verification Tool v2.1 - Tool created by AveYo, Updated by AveYo and steven4554

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Details
Released: December 19th, 2025
Next Update: January 6th, 2026
Defender: 5.12.2512.3
Engine: 1.1.25110.1
Platform: 4.18.25110.6
Version: 1.443.219.0

x64
File Size: 220.2MB / SHA-1: 50B3C5745CFE30E62CB82321B8D175083D31CCF7

arm64
File Size: 218.3MB / SHA-1: B2CE43D0532962FE1A875A72AD529BEAAD4BFE39

x86 - (This cab is for Windows 10 x86 only!)
File Size: 211.7MB / SHA-1: 6D498705CA5274A8F993FB80E07B55518F8DD7CA

Defender cabs can be downloaded here: https://mega.nz/folder/S8xknZDK#heADKKYAv9w2HUQV6s8Ntw

Download the previous two versions of supported defender cabs:-

https://mega.nz/folder/C4h3TALT#sD9qhmluImsDV7YGhpBADg

Please Note - Defender cabs (x64, arm64 and x86) will continue to be updated until end of the Windows 10 ESU programme.

Users that are running both Enterprise editions of LTSC 2021, defender cabs will continue to be made for x64 until end of support of both SKU's. As for x86, I will continue making cabs until end of support date of the LTSC Enterprise 2021 version. Which is on January 12th, 2027!

Edited 16 hours ago by steven4554

[steven4554]

Security Intelligence Update for Microsoft Defender Antivirus - KB2267602 (Version 1.443.xxxx.0) - Current Channel (Broad)

x64  -  ARM64  -  x86

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Update for Microsoft Defender Antivirus antimalware platform - KB4052623 (Version 4.18.25110.6)

Available on MS Catalog website.

x64

https://catalog.s.download.windowsupdate.com/c/msdownload/update/software/defu/2025/12/updateplatform.amd64fre_a6f8b224628abeb969df960effcebb485b62189c.exe

ARM64

https://catalog.s.download.windowsupdate.com/c/msdownload/update/software/defu/2025/12/updateplatform.arm64fre_be48cea7150940070027bef828bdc3d1ffd5c930.exe

x86

https://catalog.s.download.windowsupdate.com/c/msdownload/update/software/defu/2025/12/updateplatform.x86fre_f836d0472eac45da67b9ebd558adc1208327b7d3.exe

Update for Windows Security platform antimalware platform - KB5007651 (Version 10.0.29429.1000)
Available on MS Catalog website.

x64

https://catalog.s.download.windowsupdate.com/c/msdownload/update/software/defu/2025/08/securityhealthsetup_d50fbd3731e8dcceb40dedececac7aecbbc9f931.exe

ARM64

https://catalog.s.download.windowsupdate.com/c/msdownload/update/software/defu/2025/08/securityhealthsetup_ea0d21537657a63fb3a9620e24aad1873e1f7363.exe

Edited Thursday at 03:19 AM by steven4554

[vehf347]

On 6/22/2022 at 7:02 PM, steven4554 said:

For Integration into offline Windows 11/10 images only, not to be installed on a Running/functioning Windows 11/10 OS!

I will provide updated defender cabs on the 1st, 2nd, 3rd and 4th week of the same month, always on a Friday. Updates will be available from this first post only.

Credit goes to members on My Digital Life Forum:-

abbodi1406 for signature blocks in the Windows Defender Integration Tool script. And for providing direct download links for the beta platform updates.

Enthousiast for pointing out the missing files, letting me know about new platform updates and for testing the new defender cabs. 

AveYo for creating a verification tool that checks the digital signatures of files inside the cabs, to make sure they are valid and not tampered with. This script has been updated to support arm64.

drew84, Stripakulina and Enthousiast For providing direct download links for the x64 beta platform updates.

atplsx for providing the direct download links to pre-release platform updates.

----------------------------------------------------------------

To integrate the updated Platform and Anti-Malware definitions into your Windows 10/11 offline images, you can use the tools below:-

1. Windows NT 10.0 Updates Installer v10.50 - Tool created and maintained by abbodi1406

2. UUP to ISO Converter v111 - Tool created and maintained by abbodi1406

3. Defender files Verification Tool v2.1 - Tool created by AveYo, Updated by AveYo and steven4554

------------------------------------------------------------------

Details
Released: March 7th, 2025
Next Update: March 14th, 2025
Defender: 5.2.2502.6
Engine: 1.1.25010.7
Platform: 4.18.25010.11
Version: 1.423.282.0

x64
File Size: 191.0MB / SHA-1: 876C5FE4804B741313AAEEE45884891EFB5ACE3A

arm64
File Size: 189.5MB / SHA-1: ABD3C5CE93B4A2F6B4A59B41C07AF3AB0712A15E

x86 - (This cab is for Windows 10 x86 only!)
File Size: 186.3MB / SHA-1: 9329004CB9F522999BA25F87187617BE5705E9E0

Defender cabs can be downloaded here: https://mega.nz/folder/S8xknZDK#heADKKYAv9w2HUQV6s8Ntw

Download the previous two versions of supported defender cabs:-

https://mega.nz/folder/C4h3TALT#sD9qhmluImsDV7YGhpBADg

Please Note - Defender cabs (x64, arm64 and x86) will continue to be updated until end of the Windows 10 ESU programme.

Users that are running both Enterprise editions of LTSC 2021, defender cabs will continue to be made for x64 until end of support of both SKU's. As for x86, I will continue making cabs until end of support date of the LTSC Enterprise 2021 version. Which is on January 12th, 2027!

I missed something. I apologize for that. I thought Defender should be uninstalled, not updated. Would you please help me to understand. Thank you.

[steven4554]

User choice, some people prefer to have a Antivirus installed and kept up to date. So that's the reason why I update these defender cabs once a week cause I like to help others, and if it keeps other people protected from online threats like malware, ransomware, etc then I feel better knowing that.

Of course you don't have to have a antivirus software installed or one that comes built-in, as I said it's down to the user to decide that.