This policy setting allows you to configure the automatic scan which starts after a definition update has occurred.If you enable or do not configure this setting a scan will start following a definition update.If you disable this setting a scan will not start following a definition update.
Policy path:
Windows Components\Windows Defender\Signature Updates
Scope:
Machine
Supported on:
At least Windows Server 2012 Windows 8 or Windows RT
Registry settings:
HKLM\Software\Policies\Microsoft\Windows Defender\Signature Updates!DisableScanOnUpdate
Filename:
WindowsDefender.admx