Open Kaspersky Internet Security application, select Settings, select "General Settings", uncheck "Enable Self-Defense" option, select "Save" and select "Yes" - to confirm the action.
Exit Kaspersky Internet Security application - right click on the Kaspersky Internet Security icon in Windows task bar and select "Exit" from pop-up menu.
Go to folder "C:\ProgramData\Kaspersky Lab\AVP21.3\Report\" and delete all files and folders inside it.
Start Kaspersky Internet Security application again.
Check "Enable Self-Defense" option back.
Shutdown the computer (using Shutdown, not Restart), then power on and check if the problem persists.