In this thread (https://portal.smartertools.com/community/a2204/what-is-the-enable-real-time-av.aspx) this topic was approached, but no specific answers how to manage the command line AV.

 

I've made some tests with the MS Windows Defender but no conclusive results, below for reference the syntax I used.

 

C:\Program Files\Microsoft Security Client>MpCmdRun.exe -Scan -ScanType 3 -File %FILEPATH -disableremediation
 

Maybe someone can also chime in more results on this topic.

 

C:\Program Files\Windows Defender\MpCmdRun.exe -scan -scantype 3 -file "%FILEPATH" -disableremediation

Just an update, after setting up a mail server to send ecar test viruses through easily to our primary server, Windows defender picks them up if I copy to the desktop or manually scan the file, but in an email, it reports no threats. So clearly the scanner is not working properly.