hello,@FLOOD . thank you for reply Yes, I think if I choose the scan mode “on execution”, the File AntiVirus should scan the file when I execute the virus. My Operating System version is windows 10 LTSC 2019, build 1809. And KIS version is 20.0.14.1085 , patch e choose the “on execution”. and has not changed other option. then , I download a virus contained in a folder. Input the password and unpack it , enter the folder, wait a minute, it will be moved to quarantine.