Se Defender è disabilitato, quiesto potrebbe servire a riabilitarlo
winmgmt /salvagerepository "C:\Program Files\Windows Defender\mpcmdrun.exe" -wdenable
Dism /Online /Enable-Feature /FeatureName:Windows-Defender-Features Dism /Online /Enable-Feature /FeatureName:Windows-Defender Dism /Online /Enable-Feature /FeatureName:Windows-Defender-Gui
Dism /Online /Enable-Feature /FeatureName:Windows-Defender