How to manually update definition of Windows Defender without internet access

Question

I am an administrator of workstation which is Windows 10 versioin1803. The workstation is located in internal domain where is not allow to access to internet. Recently I got following finding by running vulnerability scan to my workstation.

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An antimalware application installed on the remote host is affected by a remote code execution vulnerability.

Enable automatic updates to update the scan engine for the relevant antimalware applications. Refer to Knowledge Base Article 2510781 for information on how to verify that MMPE has been updated.

(Product) Microsoft Windows Defender

(Path) C:\ProgramData\Microsoft\Windows Defender\Definition Updates\Default\MpEngine.dll

(Installed version) 1.1.12603.0

(Fixed version)      1.1.14405.2

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It said it requires to update definition of Windows Defender higher than version 1.1.14405.2, but the problem is we do not have internet access from the workstation, so I am looking for where I can download the latest definition file to update it manually. Any advice will be gratefully appreciated.

Answer 1

Hi Kelly
I am Sumit, an Independent Advisor and a 2-Year Windows Insider MVP here to help.

Manual definations are here.
https://www.microsoft.com/en-us/wdsi/definitions

Hope that helps

Answer 2

Hi Kelly

Greetings! I am Vijay, an Independent Advisor. Update Windows Defender manually.

Download the relevant file (.exe) from below link as per bit of your OS and double click on it to install.

32 Bit - https://go.microsoft.com/fwlink/?LinkID=121721&...

64 Bit - https://go.microsoft.com/fwlink/?LinkID=121721&...

ARM - https://go.microsoft.com/fwlink/?LinkID=121721&...

Do let me know if you have any more question or require further help.

Answer 3

If you do not have access on the workstation do you have another computer that has access?  If so use that to get the file.