Some users complained about the problem. They said that when you start a scan after installing the update, the antivirus stops checking files after about the 40th. This concerns update 4.18.1908.7.
It’s funny that Microsoft was preparing this version of the program to fix the early bug that led to the SFC / scannow command error. Well, a holy place is never empty.
Media reports that the bug in version 4.18.1908.7 is fixed after installing the Security Intelligence Update with technical number KB2267602. You can download it through the "Windows Update". In addition, the company indicated that the bug only applies to manual verification. In automatic mode, "Defender" continues to work normally.