A. Yes, Windows Defender includes a command line utility called mpcmdrun.exe that you can use to start Defender scans from a batch file. The utility is located in the %ProgramFiles%\Windows Defender folder. Make sure to use an administrator-level command prompt window for all mpcmdrun commands. To see the available options for the tool, use the command
To download the latest Defender signature files, use the command
To perform a quick Defender scan of your system, use
mpcmdrun -scan -1
For a full system scan, replace 1 with 2. Note that mpcmdrun will always check for signature updates before starting the actual scan.