Windows 10: How to script Windows Defender Antivirus definition update

Hello,I have a task to use Windows Defender Antivirus daily.My PC 1 is located behind VLAN and does not have access to internet.Another PC 2 has access to internet.PC 1 could access PC 2I have to automate the whole workflow i.e. scan and definition file update.I did it manually using the following steps:follow the link and save the file e.g. at C:\Temp use commands: C:\Program Files\Windows Defender\MpCmdRun.exe -SignatureUpdate -Path C:\Temp\mpam-fe.exeC:\Program Files\Windows Defender\MpCmdRun.exe -Scan -ScanType 2 or configure Scheduled Tasks - and enable 'Windows Defender Sc

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definition update for windows denfender antivirus

Hi mknic,
I have literally just installed the definition update KB2267602 without any problem. I suggest as a first step checking all the Windows Defender settings to make sure they all have the 'green ticks' in each section.






ps. The only reason the 'Family Options' is not ticked is because I am the only user on my computer.

I also would suggest running the 'Troubleshoot' feature in the Update & Security settings which has a section dealing with update problems.

 

Windows Defender Antivirus Definitions not updating

An automatic code was generated:

Definition Update for Windows Defender Antivirus - KB2267602 (Definition 1.269.444.0) - Error 0x80070643

Windows Defender Antivirus not updating successfully.

 

Definition Update for Windows Defender Antivirus - KB2267602 (Definition 1.269.518.0)

Hi. I can't update or install anything because of this KB Definition Update for Windows Defender Antivirus - KB2267602 (Definition 1.269.518.0)